diff --git a/Makefile b/Makefile
index 60263b2..e241254 100644
--- a/Makefile
+++ b/Makefile
@@ -31,7 +31,7 @@ npm:
 nvim:
 	@stow -t ~/ nvim
 	curl -fLo ~/.config/nvim/autoload/plug.vim --create-dirs \
-    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+	https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
 	@echo "Run :PlugInstall when nvim is first run!"
 
 ssh:
@@ -47,8 +47,8 @@ wallpapers:
 	@stow -t ~/ wallpapers
 
 zsh:
-	git clone git://github.com/robbyrussell/oh-my-zsh.git ~/.oh-my-zsh
-	git clone https://github.com/zsh-users/zsh-completions ~/.oh-my-zsh/custom/plugins/zsh-completions
+	git clone https://github.com/robbyrussell/oh-my-zsh.git ~/.oh-my-zsh
+	git clone https://github.com/zsh-users/zsh-completions.git ~/.oh-my-zsh/custom/plugins/zsh-completions
 	@stow -t ~/ zsh
 
 clean:
diff --git a/README.md b/README.md
index 76b5f4d..d3440e0 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # dotfiles & system setup
 
-```shell
+```
 git            > global git config & aliases
 lftp           > sftp management
 npm            > npm configuration (ha ha)
@@ -16,8 +16,18 @@ zsh            > shell, aliases and cool stuff
 
 Clone repository, then setup as desired.
 
-Look at Makefile, or use GNU Stow directly.
+Look at [Makefile](Makefile), or use [GNU Stow][url-gnu-stow] directly.
+
+## Further Reading
+
+*   [Mozilla OpenSSH security guidelines][url-mozilla-ssh]
+*   [Good read on securing OpenSSH][url-secure-shell]
+
 
 ## LICENSE
 
 The MIT License ([MIT](LICENSE.md))
+
+[url-gnu-stow]:https://www.gnu.org/software/stow/
+[url-mozilla-ssh]:https://wiki.mozilla.org/Security/Guidelines/OpenSSH
+[url-secure-shell]:https://stribika.github.io/2015/01/04/secure-secure-shell.html