Zsh

1. Zsh manual index

   Table of contents for the entire Zsh manual.

2. Introduction

   Overview of zsh and its startup files and invocation.

3. Shell grammar

   Simple commands, pipelines, lists, loops and conditionals.

4. Expansion

   Globbing, parameter and history expansion.

5. Parameters

   Variables, arrays and special parameters.

6. Options

   setopt and unsetopt options like AUTO_CD and EXTENDED_GLOB.

7. Functions

   Defining and autoloading functions.

8. Completion system

   compinit, compdef, completers and styles.

9. Zsh line editor

   ZLE widgets, keymaps and bindkey.

10. Prompt expansion

    PS1 escape sequences, colors and %-expansions.

11. Files

    zshenv, zprofile and zshrc order.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.