diff --git a/knowledge base/fish.md b/knowledge base/fish.md
index f1d0e67..055c656 100644
--- a/knowledge base/fish.md	
+++ b/knowledge base/fish.md	
@@ -4,6 +4,7 @@ The friendly interactive shell.
 
 1. [TL;DR](#tldr)
 1. [Configuration](#configuration)
+1. [Prompt](#prompt)
 1. [Further readings](#further-readings)
 1. [Sources](#sources)
 
@@ -44,11 +45,17 @@ end
 
 `fish` offers a web-based configuration interface. Open it executing `fish_config`.
 
+## Prompt
+
+See [Starship] or Tide.
+
 ## Further readings
 
 - [Website]
 - [`bash`][bash]
 - [`zsh`][zsh]
+- [Starship] (prompt)
+- [Oh My Fish][oh-my-fish]
 
 ## Sources
 
@@ -66,6 +73,8 @@ All the references in the [further readings] section, plus the following:
 
 <!-- Knowledge base -->
 [bash]: bash.md
+[oh-my-fish]: https://github.com/oh-my-fish/oh-my-fish
+[starship]: starship.md
 [zsh]: zsh.md
 
 <!-- Files -->
diff --git a/knowledge base/nerd fonts.md b/knowledge base/nerd fonts.md
new file mode 100644
index 0000000..6eb2f77
--- /dev/null
+++ b/knowledge base/nerd fonts.md	
@@ -0,0 +1,37 @@
+# Nerd fonts
+
+1. [TL;DR](#tldr)
+1. [Further readings](#further-readings)
+1. [Sources](#sources)
+
+## TL;DR
+
+```sh
+# Installation.
+brew tap 'homebrew/cask-fonts' && brew install 'font-hack-nerd-font'
+```
+
+## Further readings
+
+- [Website]
+
+## Sources
+
+All the references in the [further readings] section, plus the following:
+
+- [Github]
+
+<!--
+  References
+  -->
+
+<!-- In-article sections -->
+[further readings]: #further-readings
+
+<!-- Knowledge base -->
+<!-- Files -->
+<!-- Upstream -->
+[github]: https://github.com/ryanoasis/nerd-fonts
+[website]: https://www.nerdfonts.com/
+
+<!-- Others -->
diff --git a/knowledge base/starship.md b/knowledge base/starship.md
new file mode 100644
index 0000000..eba8ef9
--- /dev/null
+++ b/knowledge base/starship.md	
@@ -0,0 +1,72 @@
+# Starship
+
+Fast and customizable prompt for most shells.
+
+1. [TL;DR](#tldr)
+1. [Configuration](#configuration)
+1. [Further readings](#further-readings)
+1. [Sources](#sources)
+
+## TL;DR
+
+```sh
+# Installation.
+brew install 'starship'
+zypper in 'starship'
+
+# Start when the shell starts.
+eval "$(starship init bash)" | tee -a ~'/.bashrc'
+echo 'starship init fish | source' | tee -a ~'/.config/fish/config.fish'
+eval "$(starship init zsh)" | tee -a ~'/.zshrc'
+
+# Initialize starship configuration.
+mkdir -p ~'/.config' && touch ~'/.config/starship.toml'
+
+# List available presets (prompt styles).
+starship preset -l
+```
+
+## Configuration
+
+```sh
+# ~/.config/starship.toml
+
+# Get editor completions based on the config schema.
+"$schema" = 'https://starship.rs/config-schema.json'
+
+# Replace the default '❯' symbol in the prompt with '$'.
+# The '$' character needs to be escaped.
+[character]
+success_symbol = '[\$](bold green)'
+```
+
+## Further readings
+
+- [Website]
+- [Nerd fonts]
+
+## Sources
+
+All the references in the [further readings] section, plus the following:
+
+- [Github]
+
+<!--
+  References
+  -->
+
+<!-- In-article sections -->
+[further readings]: #further-readings
+
+<!-- Knowledge base -->
+[bash]: bash.md
+[fish]: fish.md
+[nerd fonts]: nerd%20fonts.md
+[zsh]: zsh.md
+
+<!-- Files -->
+<!-- Upstream -->
+[github]: https://github.com/starship/starship
+[website]: https://starship.rs/
+
+<!-- Others -->