Here, on the Bodybuilding.com forum, is a helpful poll on "Best
sex position for female" :
http://forum.bodybuilding.com/showthread.php?t=834730
Be sure to make your girl's pleasure the priority during sex, guys!
(For your own pleasure you can go fleshlight yourself).
Also don't forget to check out "Female Ejaculation", in which
you'll be putting your hands to good use and giving your girl some
orgasmic ejaculations :
http://www.google.com/search?hl=en&q=female+ejaculation