Here are the basic sex positions, and a breakdown of each:
Possibly the most common position, good for beginners, very intimate as both partners are facing each other
Not as intimate as missionary, but lots of fun, a little bit advanced for beginners
Also a good beginners choice, as the female has control of penetration and speed, also a lot of fun
A great choice for those getting a little more comfortable, and great all round, she's on the bottom, one leg goes up on your shoulder first then you lean over to allow the other up, then work away...
Here's a good wiki page with lots of information, as well. Just don't click at work. ;)
List of Sex Positionswho am I kidding, sex is fun in any position....