Most people who have spent any time using the command line have learned to use vim well enough to edit conf files: moving the cursor, entering insert mode, and saving and quitting the file
:wq. I know because I was one of those people for years. It wasn't until I found a few magical commands that I truly understood why vim was a true competitor in a world of IDE's and Textmate clones.
The following is a list of commands that you should be using all the time. If you do you will start to understand that you are a god.
J Join lines: Joins the current line with the one below it leaving your cursor in a space between them.
ciw Change in word: deletes the current word and puts you in insert mode.
diw Delete in word: deletes the current word and leaves you in normal normal mode.
fc Find character: will find whatever character you enter after
f and put your cursor there.
tc Find til character: will find whatever character you enter after
t and put your cursor before it.
Fc Find previous char.
Tc Find til previous character: will find the previous character and put your cursor after it.