2-7 Triple Draw in a nutshell...
First read
this page which explains rules, hand rankings. It's not the same as A-5 lowball.
Also found
this page which gives good basic advice about the game.
Starting hand requirements:
< 3 cards to a 7 low - fold, except in the blinds if limped
3 cards to a 7 low (any) - limp
3+ cards to a 7 low with a 3,2 ; 4,2 ; 4,3 - pot it
Position is important here for the same reason it's important in any pot-limit game - you want to know if things are going to sprial into big-pots or not.
Pay attention to the number of draws for each opponent. It can go by quickly so use some discipline and pay attention.
If you're still in the hand after the first draw and your opponents are drawing 3 or more you are ahead and should proceed as such until they are either drawing fewer than you or reraise.
If they are drawing few then you give them credit for it and evaluate where you are in the hand. Probably time to slow down if you are drawing more.
After the first draw, you want to have 4 cards to an 9 low or better if against 3 or more opponents. This is the point where you can either get away from a pot cheap or you have a winner or a great drawing hand.
2nd, 3rd draws - depends on the number of opponents. If I'm up against 2 others drawing 1 card I am not happy staying in with 10 low/drawing 1. I definitely will discard the 10 here.
Getting to showdown...
I will NOT bet an 8 low or worse at showdown unless heads up against an opponent who is drawing 1 or more - otherwise you're betting for value. You will call bets though - particularly if you're opponent has been drawing throughout.
I will bet pot bet, raise, reraise every 7 low. Against the tightest of tight opponents I will consider just calling if they are coming back over the top but you can't fold a 7 low.
That should do for a start. Read the excellent chapter in SS2 (Daniel Negraneau I think wrote this chapter). It's a little too tight for this stake level but it explains 2-7 triple draw fantastically.
Maybe not as exciting as hold-em or omaha, but you sure can make a good amount of $$$ playing it properly.