I like to use actonscript 2.0 when making buttons because it is simpler. but if you want,(it may be worth the time and energy) you can learn actionscript 3.0. IN actionscript 2.0, you can add actions to a certain button just by right clicking it and choosing actions in the pull down bar. in AS2 the actions are very simple:
example in AS2 when a button is selected:
on(release) {
nextFrame();
}
In AS3, you cannot add actions to a particular object just by clicking on it.
you have to go through a longer process to target the object using actionscript only. this is only my view.
one of the best tutorial links on this site for learning actionscript is at
this is the flash tutorial collab and it has tutorials on some of the basics.
good luck with your game!