Something I didn't know until recently:
zsh does not require
cdto change directories.
Using the directory as a command implies "cd". For example, instead of doing:
me@server:/home/me $ cd /tmp me@server:/tmp $
You can just do:
me@server:/home/me $ /tmp me@server:/tmp $
That's three whole keystrokes (nearly half the command shown above), all day long.