diff --git a/content/blog/series/01-series-introduction/index.md b/content/blog/series/01-series-introduction/index.md
deleted file mode 100644
index 4764e8e..0000000
--- a/content/blog/series/01-series-introduction/index.md
+++ /dev/null
@@ -1,21 +0,0 @@
-+++
-title = "An introduction to series"
-date = 2023-05-21
-description = "This first article introduces how does series works and how to configure them."
-
-[taxonomies]
-tags = ["showcase", "tutorial"]
-
-[extra]
-series_template_variables = { position = "first", foo = "FOO!!!"}
-
-+++
-
-{{ admonition(type="warning", icon="warning", title="IMPORTANT", text="This article has been introduced retroactively to showcase series.") }}
-
-Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
-Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. [^1]
-Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
-Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
-
-[^1]: Lorem.
diff --git a/content/blog/series/02-series-pages-organization/index.md b/content/blog/series/02-series-pages-organization/index.md
deleted file mode 100644
index 149dc8c..0000000
--- a/content/blog/series/02-series-pages-organization/index.md
+++ /dev/null
@@ -1,21 +0,0 @@
-+++
-title = "How to organise a series' pages"
-date = 2023-08-29
-description = "This second article focuses on how to organisation the pages of a series."
-
-[taxonomies]
-tags = ["showcase", "tutorial"]
-
-[extra]
-[extra.series_template_variables]
-position = "second"
-foo = "FOO FOO!!!"
-
-+++
-
-{{ admonition(type="warning", icon="warning", title="IMPORTANT", text="This article has been introduced retroactively to showcase series.") }}
-
-Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
-Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
-Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
-Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
diff --git a/content/blog/series/03-series-cheat-sheet/index.md b/content/blog/series/03-series-cheat-sheet/index.md
deleted file mode 100644
index 1a6cf42..0000000
--- a/content/blog/series/03-series-cheat-sheet/index.md
+++ /dev/null
@@ -1,316 +0,0 @@
-+++
-title = "Series cheat sheet"
-date = 2024-08-08
-description = "This last article provides an overview of series and describe all possible parameters."
-
-[taxonomies]
-tags = ["showcase", "tutorial", "FAQ"]
-
-[extra]
-series_template_variables = { position = "third", foo = "FOO FOO FOO!!!"}
-toc = true
-add_src_to_code_block = true
-+++
-
-## Quick Start
-
-1. Create a directory for your series.
-2. Create `_index.md` in the series directory.
-3. Set up the `_index.md` front matter:
-
- {{ add_src_to_code_block(src="series/_index.md") }}
-
- ```toml
- title = "Learning Rust"
- template = "series.html"
- sort_by = "slug"
- transparent = true
-
- [extra]
- series = true
- ```
-
-4. Create your series articles in this directory.
-
-Want more? Keep reading!
-
-## Jump to Posts
-
-When a series has a description over 2000 characters, a "Jump to posts" link automatically appears next to the series title:
-
-##### TODO: Add screenshot with final design
-
-To force the feature on or off, use the `show_jump_to_posts` option in the `[extra]` section of your section (series) or in `config.toml`. This setting follows [the hierarchy](@blog/mastering-tabi-settings/index.md#settings-hierarchy).
-
-## Intro and Outro Templates
-
-Series articles can have automatic introduction and conclusion sections. These are configured in your series' `_index.md`. A basic example:
-
-{{ add_src_to_code_block(src="series/_index.md") }}
-
-```toml
-[extra.series_intro_templates]
-default = "This article is part of the $SERIES_HTML_LINK series."
-
-[extra.series_outro_templates]
-default = "Thanks for reading part $SERIES_PAGE_INDEX of $SERIES_HTML_LINK!"
-```
-
-### Template Types
-
-The series system uses different templates based on an article's position in the series:
-
-- `next_only` - Used for the first article (has next article but no previous)
-- `middle` - Used for articles with both previous and next articles
-- `prev_only` - Used for the last article (has previous article but no next)
-- `default` - Fallback template used when a specific position template isn't defined
-
-The system automatically determines which template to use based on the article's position. The templates are defined in the series configuration (`_index.md`), as `extra.series_intro_templates` and `extra.series_outro_templates`.:
-
-{{ add_src_to_code_block(src="series/_index.md") }}
-
-```toml
-[extra.series_intro_templates]
-next_only = "Welcome to part 1! Next up: $NEXT_HTML_LINK"
-middle = "Previous: $PREV_HTML_LINK | Next: $NEXT_HTML_LINK"
-prev_only = "The final chapter! Previously: $PREV_HTML_LINK"
-default = "Part $SERIES_PAGE_INDEX of $SERIES_PAGES_NUMBER"
-```
-
-All templates are optional. Template selection follows a priority system:
-
-1. If a position-specific template exists (`next_only`, `middle`, or `prev_only`), it will be used
-2. Otherwise, the `default` template is used
-3. If no templates are defined at all, no series information will be displayed
-
-See the [template example](#template-example) for a more elaborate example.
-
-### Placement in Content
-
-By default:
-
-- Series introductions appear at the start of your article
-- Series outro appears at the end (before footnotes, if any)
-
-You can control exactly where these appear using `` and `` in your Markdown:
-
-```markdown
-This paragraph appears before the series introduction.
-
-
-
-Main content of the article.
-
-
-
-## Learning Resources
-
-Extra content…
-
-[^1]: Footnotes will always appear at the end.
-```
-
-## Variables
-
-Series templates use a flexible variable system that lets you:
-
-1. Reference series information (title, links)
-2. Add navigation between articles
-3. Show progress indicators
-4. Include custom information using your own variables
-
-Variables are placeholders starting with `$` that get replaced with actual content when your site builds. For example, `$SERIES_HTML_LINK` becomes a clickable link to your series index page.
-
-There are three types of variables:
-
-- [**Basic Series Variables**](#basic-series-variables): General information about the series
-- [**Navigation Variables**](#navigation-variables): Links to previous/next articles
-- [**Custom Variables**](#custom-variables): Your own placeholders for additional information
-
-### Basic Series Variables
-
-{% wide_container() %}
-
-| Variable | Availability | Returns | Description | Example Usage | Example Output |
-|----------|-------------|---------|-------------|---------------|----------------|
-| `$SERIES_TITLE` | Always | Text | Plain text title of the series | `Part of $SERIES_TITLE` | Part of Learn Rust |
-| `$SERIES_PERMALINK` | Always | Text | URL to series index | `[See all posts]($SERIES_PERMALINK)` | [See all posts](/series/learn-rust) |
-| `$SERIES_HTML_LINK` | Always | HTML | Ready-to-use link to series | `Welcome to $SERIES_HTML_LINK!` | Welcome to Learn Rust! |
-| `$SERIES_PAGES_NUMBER` | Always | Number | Total articles in series | `A $SERIES_PAGES_NUMBER part series` | A 5 part series |
-| `$SERIES_PAGE_INDEX` | Always | Number | Current article's position | `Part $SERIES_PAGE_INDEX of $SERIES_PAGES_NUMBER` | Part 3 of 5 |
-| `$SERIES_PAGES_OLIST` | Always | HTML | Ordered list of all articles | `Articles in series: $SERIES_PAGES_OLIST` | Articles in series:
- Current article
- Other articles
|
-| `$SERIES_PAGES_ULIST` | Always | HTML | Unordered list of all articles | `Articles in series: $SERIES_PAGES_ULIST` | Articles in series: |
-
-{% end %}
-
-### Navigation Variables
-
-{% wide_container() %}
-
-| Variable | Availability | Returns | Description | Example Usage | Example Output |
-|----------|-------------|---------|-------------|---------------|----------------|
-| `$PREV_TITLE` | Previous exists | Text | Previous article's title | `Previously: $PREV_TITLE` | Previously: Setting Up Your Environment |
-| `$PREV_PERMALINK` | Previous exists | Text | URL to previous article | `[← Back]($PREV_PERMALINK)` | [← Back](/series/learn-rust/setup) |
-| `$PREV_HTML_LINK` | Previous exists | HTML | Ready-to-use link to previous | `Read $PREV_HTML_LINK first` | Read Setting Up Your Environment first |
-| `$PREV_DESCRIPTION` | Previous exists | Text | Description of previous article | `Recap: $PREV_DESCRIPTION` | Recap: Setting up Rust |
-| `$NEXT_TITLE` | Next exists | Text | Next article's title | `Next up: $NEXT_TITLE` | Next up: Advanced Patterns |
-| `$NEXT_PERMALINK` | Next exists | Text | URL to next article | `[Continue →]($NEXT_PERMALINK)` | [Continue →](/series/learn-rust/patterns) |
-| `$NEXT_HTML_LINK` | Next exists | HTML | Ready-to-use link to next | `Continue with $NEXT_HTML_LINK` | Continue with Advanced Patterns |
-| `$NEXT_DESCRIPTION` | Next exists | Text | Description of next article | `Coming up: $NEXT_DESCRIPTION` | Coming up: Learn about Rust's advanced pattern matching features |
-
-{% end %}
-
-### First Article Reference
-
-{% wide_container() %}
-
-| Variable | Availability | Returns | Description | Example Usage | Example Output |
-|----------|-------------|---------|-------------|---------------|----------------|
-| `$FIRST_TITLE` | Always | Text | First article's title | `Start with $FIRST_TITLE` | Start with Introduction to Rust |
-| `$FIRST_HTML_LINK` | Always | HTML | Ready-to-use link to first article | `Begin at $FIRST_HTML_LINK` | Begin at Introduction to Rust |
-
-{% end %}
-
-### Template Example
-
-{{ admonition(type="tip", title="HTML vs text variables", text="Use HTML variables (ending in `_HTML_LINK`) when you want ready-made links. Use text variables (ending in `_TITLE` or `_PERMALINK`) when you want more control over the formatting.") }}
-
-{{ add_src_to_code_block(src="series/_index.md") }}
-
-```toml
-# Introduction.
-[extra.series_intro_templates]
-next_only = """
-Welcome to $SERIES_HTML_LINK! This $SERIES_PAGES_NUMBER-part series will teach you Rust from scratch.
-
-Up next: $NEXT_HTML_LINK - $NEXT_DESCRIPTION
-"""
-
-middle = """
-📚 Part $SERIES_PAGE_INDEX of $SERIES_PAGES_NUMBER in $SERIES_HTML_LINK
-
-Previously: $PREV_HTML_LINK
-Next up: $NEXT_HTML_LINK
-"""
-
-prev_only = """
-Welcome to the final part of $SERIES_HTML_LINK!
-New here? Start with $FIRST_HTML_LINK to build a strong foundation.
-
-Previously: $PREV_HTML_LINK
-"""
-
-# Fallback template.
-default = "This article is part of the $SERIES_HTML_LINK series."
-
-
-# Outro.
-[extra.series_outro_templates]
-next_only = """
-Thanks for reading! 🙌
-
-Continue your journey with $NEXT_HTML_LINK, where $NEXT_DESCRIPTION
-Or check out the complete [$SERIES_TITLE]($SERIES_PERMALINK) series outline.
-"""
-
-middle = """
----
-📝 Series Navigation
-
-- Previous: $PREV_HTML_LINK
-- Next: $NEXT_HTML_LINK
-- [Series Overview]($SERIES_PERMALINK)
-"""
-
-prev_only = """
-🎉 Congratulations! You've completed $SERIES_HTML_LINK.
-
-Want to review? Here's where we started: $FIRST_HTML_LINK
-Or check what we just covered in $PREV_HTML_LINK.
-"""
-
-# Fallback.
-default = """
----
-This article is part $SERIES_PAGE_INDEX of $SERIES_PAGES_NUMBER in $SERIES_HTML_LINK.
-"""
-```
-
-### Custom Variables
-
-Series templates support custom variables for additional information you want to include across your series. The process takes two steps:
-
-1. First, define your **placeholders** in your series configuration (`_index.md`):
-
-{{ add_src_to_code_block(src="series/_index.md") }}
-
-```toml
-[extra]
-series = true
-series_template_placeholders = ["$POSITION", "$TOPIC", "$DIFFICULTY"]
-```
-
-2. Then, in each series article, provide the values for these placeholders in `series_template_variables`:
-
-{{ add_src_to_code_block(src="series/article.md") }}
-
-```toml
-[extra.series_template_variables]
-position = "first"
-topic = "Variables and Types"
-difficulty = "Beginner"
-```
-
-### Using Custom Variables
-
-You can use your custom variables in any template, alongside the built-in variables:
-
-{{ add_src_to_code_block(src="series/_index.md") }}
-
-```toml
-[extra.series_intro_templates]
-default = """
-This is the $POSITION article in $SERIES_HTML_LINK.
-Today's topic: $TOPIC
-Difficulty level: $DIFFICULTY
-"""
-```
-
-{{ admonition(type="warning", text="While placeholders are defined with uppercase (`$POSITION`), the variable names in `series_template_variables` must be lowercase (`position`).") }}
-
-### Example with Custom Variables
-
-{{ add_src_to_code_block(src="series/_index.md") }}
-
-```toml
-# In the series configuration.
-[extra]
-series = true
-series_template_placeholders = ["$LEARNING_TIME", "$KEY_CONCEPTS"]
-
-series_intro_templates.default = """
-📚 Part $SERIES_PAGE_INDEX of $SERIES_PAGES_NUMBER
-⏱️ Estimated time: $LEARNING_TIME
-🔑 Key concepts: $KEY_CONCEPTS
-"""
-
-```
-
-{{ add_src_to_code_block(src="series/02-learning-rust/index.md") }}
-
-```toml
-# In an article of the series.
-[extra.series_template_variables]
-learning_time = "30 minutes"
-key_concepts = "Functions, Error Handling, Pattern Matching"
-```
-
-This will output:
-
-```text
-📚 Part 2 of 5
-⏱️ Estimated time: 30 minutes
-🔑 Key concepts: Functions, Error Handling, Pattern Matching
-```
-
-{{ admonition(type="warning", title="Missing Variables", text="If you use a placeholder in your templates but don't provide its value in `series_template_variables`, the build will fail with an error listing the missing variables.") }}
diff --git a/content/blog/series/_index.md.old b/content/blog/series/_index.md.old
deleted file mode 100644
index e39c6bd..0000000
--- a/content/blog/series/_index.md.old
+++ /dev/null
@@ -1,40 +0,0 @@
-+++
-title = "How to deal with series"
-template = "series.html"
-sort_by = "slug"
-description = "This series explains how to properly configure a series."
-transparent = true
-insert_anchor_links = "left"
-
-[extra]
-series = true
-quick_navigation_buttons = true
-show_jump_to_posts = true
-post_listing_index_reversed = false
-
-series_template_placeholders = ["$POSITION", "$FOO", "$BAR"]
-series_page_introduction = """
-You can put whatever you want in a custom description.
-
-**All** variable are accessibles, including custom ones.
-
-Markdown is rendered.
-"""
-
-[extra.series_intro_templates]
-prev_only = "Welcome back to $SERIES_HTML_LINK! This is article the $POSITION of $SERIES_PAGES_NUMBER, following $PREV_HTML_LINK."
-next_only = "Welcome to $SERIES_HTML_LINK! This is the $POSITION article in a $SERIES_PAGES_NUMBER-part series."
-middle = "Welcome to the $POSITION of $SERIES_PAGES_NUMBER articles in $SERIES_HTML_LINK. We previously covered $PREV_HTML_LINK."
-default = "This article is part $SERIES_PAGE_INDEX of $SERIES_PAGES_NUMBER in the $SERIES_HTML_LINK series."
-
-[extra.series_outro_templates]
-prev_only = "Check out the previous post in the $SERIES_HTML_LINK series: [$PREV_TITLE]($PREV_PERMALINK)."
-next_only = "This is the start of the [series]($SERIES_PERMALINK). Continue with $NEXT_HTML_LINK!"
-middle = "Previously: $PREV_HTML_LINK. Up next: $NEXT_HTML_LINK."
-default = "This article is part of the $SERIES_HTML_LINK series."
-+++
-
-Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
-Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
-Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
-Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.