In my zsh configuration I define a number of aliases. One particular zsh alias maps gl to my custom Git alias “git lg”. Since my zsh configuration is portable, I want to define a fallback if my custom Git alias does not exist on the machine.
One of the things that made me much better at Git was making my current branch (and whether or not I have any changed files) always visible. By default zsh includes everything you need to do this, you just need to configure it.
While there are many ways to customization your command line prompt, one that can help readability is adding a blank line at the beginning of each prompt.