If you are just starting out, then there is a lot to learn. With so many tutorials/cheatsheets it can be difficult to know where to start. So let's make it easy:

http://vimcasts.org/

Just so many great screencasts here by Drew, who I had the pleasure of meeting a very long time ago in Newcastle Upon Type. I even bought his book! I'm not sure what Drew is up to now, but he did a good thing for the vim community. The screencasts are worth watch just for the funky bass lines.