You are right, there is a lot more to it than that!
There are a lot of videos out there. The best ones for you will depend on how you plan to use your bow.
PSE has some good basic videos on form & arrow flight.
Robin Hood Videos
http://www.robinhoodvideos.com has videos with a lot of good information if you can get past the BS, excuse me "Marketing"
Lancaster Archery Supply also has some.
Do an online search and you will come up with enough to get you started. However, I would strongly recommend working with a coach. While you can learn a lot from videos and books, you can do it much faster with a good coach.
Good luck,
Allen