I'll link to my bashrc for anyone looking at how to setup some of this stuff.

My top 5 are

• gs for a pretty version of git status
• gc for quick committing with git
• .. to quickly back out of the directory your in
• z for quick directory traversal with fasd
• up which updates various things that I do not care to remember to update like homebrew, npm, vim-plug, etc. Check out the link above or look at line 116 as it shows the meta part of it.