diff --git a/src/c.md b/src/c.md
index 28b04c3..397aaa0 100644
--- a/src/c.md
+++ b/src/c.md
@@ -1,5 +1,18 @@
 # Notes on C
 
+- [Notes on C](#notes-on-c)
+  - [Basics](#basics)
+    - [Enums](#enums)
+    - [Pointers](#pointers)
+    - [Arrays](#arrays)
+    - [Structs](#structs)
+    - [Unions](#unions)
+  - [Qualifiers](#qualifiers)
+  - [Preprocessor](#preprocessor)
+  - [Some Best Practices](#some-best-practices)
+  - [Some Headers](#some-headers)
+  - [Bibliography](#bibliography)
+
 ## Basics
 
 The minimal "hello world" C program:
diff --git a/src/cpp.md b/src/cpp.md
index 7fe750f..4fa9f63 100644
--- a/src/cpp.md
+++ b/src/cpp.md
@@ -1,5 +1,28 @@
 # Notes on C++
 
+- [Notes on C++](#notes-on-c)
+  - [Basics](#basics)
+  - [User-Defined Types](#user-defined-types)
+  - [Modularity](#modularity)
+  - [Classes](#classes)
+    - [Constructors](#constructors)
+    - [Copy Constructors](#copy-constructors)
+    - [Copy Assignment](#copy-assignment)
+    - [Move Constructor](#move-constructor)
+  - [Operations](#operations)
+  - [Templates](#templates)
+  - [Generic Programming](#generic-programming)
+  - [Standard Library](#standard-library)
+  - [Strings and Regex](#strings-and-regex)
+  - [I/O](#io)
+  - [Containers](#containers)
+  - [Algorithms](#algorithms)
+  - [Utilities](#utilities)
+  - [Numerics](#numerics)
+  - [Concurrency](#concurrency)
+  - [References](#references)
+
+
 ## Basics
 
 The minimal "hello world" C++ program:
diff --git a/src/cython.md b/src/cython.md
index de5805e..c52b70a 100644
--- a/src/cython.md
+++ b/src/cython.md
@@ -1,5 +1,22 @@
 # Notes on Cython
 
+- [Notes on Cython](#notes-on-cython)
+  - [Compilation](#compilation)
+    - [Using distutils with cythonize](#using-distutils-with-cythonize)
+  - [Typing](#typing)
+    - [Typing variables](#typing-variables)
+    - [C Functions](#c-functions)
+    - [C Functions with Automatic Python Wrappers](#c-functions-with-automatic-python-wrappers)
+    - [Exception Handling](#exception-handling)
+    - [C structs, unions, enums an typedefs](#c-structs-unions-enums-an-typedefs)
+    - [Efficient Loops](#efficient-loops)
+  - [Extension Types](#extension-types)
+  - [Wrapping C++](#wrapping-c)
+  - [Profiling](#profiling)
+  - [Typed Memoryviews](#typed-memoryviews)
+  - [Parallelism](#parallelism)
+  - [References](#references)
+
 ## Compilation
 
 ### Using distutils with cythonize
diff --git a/src/jl_dive.md b/src/jl_dive.md
index f685641..4ae08e6 100644
--- a/src/jl_dive.md
+++ b/src/jl_dive.md
@@ -1,5 +1,28 @@
 # Julia Deep Dive
 
+- [Julia Deep Dive](#julia-deep-dive)
+  - [Basics](#basics)
+  - [Data Types and Structures](#data-types-and-structures)
+    - [Scalar Types](#scalar-types)
+    - [Basic Math](#basic-math)
+    - [Strings](#strings)
+    - [Arrays](#arrays)
+    - [Multidimensional and Nested Arrays](#multidimensional-and-nested-arrays)
+    - [Tuples](#tuples)
+    - [Named Tuples](#named-tuples)
+    - [Dictionaries](#dictionaries)
+    - [Sets](#sets)
+    - [Memory and Copy](#memory-and-copy)
+    - [Random Numbers](#random-numbers)
+  - [Basic Syntax](#basic-syntax)
+    - [Functions](#functions)
+  - [Custom Types](#custom-types)
+  - [I/O](#io)
+  - [Metaprogramming](#metaprogramming)
+  - [Exceptions](#exceptions)
+  - [DataFrames](#dataframes)
+  - [References](#references)
+
 ## Basics
 
 The minimal "hello world" program:
diff --git a/src/py_tips.md b/src/py_tips.md
index 6758840..578156d 100644
--- a/src/py_tips.md
+++ b/src/py_tips.md
@@ -1,5 +1,31 @@
 # Python Tips
 
+- [Python Tips](#python-tips)
+  - [General Project Guidance](#general-project-guidance)
+    - [Project Layout](#project-layout)
+    - [Versioning](#versioning)
+      - [PEP 440 / PyPA Guidelines](#pep-440--pypa-guidelines)
+      - [Semantic Versioning](#semantic-versioning)
+    - [Linting and Formating](#linting-and-formating)
+      - [Ruff](#ruff)
+        - [Configuration](#configuration)
+      - [PyRight](#pyright)
+  - [Modules, Libraries and Frameworks](#modules-libraries-and-frameworks)
+    - [Importing](#importing)
+    - [`sys` Module](#sys-module)
+    - [Import Paths](#import-paths)
+    - [Useful Standard Libraries](#useful-standard-libraries)
+  - [Documentation](#documentation)
+    - [Documenting API Changes](#documenting-api-changes)
+    - [Diátaxis](#diátaxis)
+    - [Generating Documentation from Docstrings](#generating-documentation-from-docstrings)
+    - [Doctesting](#doctesting)
+  - [Release Engineering](#release-engineering)
+    - [Poetry](#poetry)
+    - [Tox](#tox)
+  - [The Abstract Syntax Tree](#the-abstract-syntax-tree)
+  - [Bibliography](#bibliography)
+
 ## General Project Guidance
 
 ### Project Layout
diff --git a/src/rust.md b/src/rust.md
index f0abafb..cd95bcd 100644
--- a/src/rust.md
+++ b/src/rust.md
@@ -1,5 +1,15 @@
 # Notes on Rust
 
+- [Notes on Rust](#notes-on-rust)
+  - [Basics](#basics)
+  - [Importing and Namespaces](#importing-and-namespaces)
+  - [Panic, Options and Result](#panic-options-and-result)
+  - [Lifetime](#lifetime)
+  - [Memory](#memory)
+    - [Stack and Heap](#stack-and-heap)
+    - [Ownership](#ownership)
+  - [References](#references)
+
 ## Basics
 
 Rust's philosophy: