Here are a number of tables and lists for dice throws showing the odds for specific combinations.  If you can learn these you can improve your dice play considerably.

Odds are what dice games are all about.  Using your judgment to decide when to hold or try for a combination is the skill element in a dice game.  The tables here show the odds of achieving specified outcomes with a number of dice and using your educated judgement to decide when a roll has a reasonable chance of winning will give you the edge.  Knowing these odds will give you an advantage over other players.  

* Odds are in favour of achieving outcome not against.