8-Ball Pool is one of my favorite games be it Pool or otherwise (cards). Many people will make their Pool playing skills go up just by playing this game. Now you could also play 9-Ball, but I don't particularly like 9-Ball since although it does require similar skills, I'm not very fond of me doing all the work, missing one shot, and then the other person sinks the 9-ball and claims victory. I also don't like the "slop" aspect of the game where you don't have to call each shot and can basically pocket an object ball anywhere and continue to play.
I play this game more than any other Pool game and have found it to be one of the most difficult common Pool games you will find to play - especially if you play by the rules according to the BCA rather than a friend's rules, "house" rules, or people that have an outdated understanding of what is allowed or not.
I've included a few pictures of various friends and me playing the game of 8-Ball as well as a PDF (Acrobat) file you can download that illustrates the rules according to the BCA (Billiard Congress of America), although you may want to check with them to be sure the rules are current. I've noticed they change the rules over the years to make the game more enjoyable for tournaments and television.
Show Me The Rules
Some links you may want to try:
Billiards.com (valuable articles on pool
and supplies too)
(click a picture to enlarge)