I think I have the hang of the game but heres my question.

On my turn can I choose the same action more than once...example

Play a level 1 friend, then battle, then play another friend.

I know you can play multiple friends but can you divide the actions?

Yes you can.

A Turn is divided into 4 Phases: Draw, Action, Challenge, Discard

So the action phase is when everything happens and can be done in any order you wish and as many times as you wish...with the exception of battling and moving to a new world of course.