Played optimally on a good paying game, Video Poker is one of the best returning games you can play.  Some video poker games, with good pay tables can actually offer a small player edge if played optimally.  Here's a good general guide to playing Jacks or Better Video Poker.  

• Hold any four cards to a straight flush.

• Hold any three cards to a royal flush.

• Hold any four cards to a flush.

• Hold any low pair (tens or lower).

• Hold any four-card consecutive straight.

• Hold any two high cards of the same suit.

• Hold any three cards to a straight flush.

• Hold J, Q, and K of different suites.

• Hold any two high cards of different suites.

• Hold J, Q or K with a Ten of the same suit.

• Hold any single high card.

• If you didn’t get dealt any of the above, draw five new cards.