In a game of 501 the object is for one player or a team to be the first to reach zero from starting total of 501. Getting three darts in the triple 20 gives the player 180. This is a difficult accomplishment but the pros do it a regular basis. For complete basic rules check out this link.
If you want to watch some of the best in the world just check out this video
Click now and make a family heirloom this weekend.
DVD and the 2013 update DVD at this link. DVD #1 is $20 and contains over 1,100 patterns. The 2013 update DVD is $7.50 and has another 178 patterns. The 2014 update DVD is $7.50 and has another 223 patterns.