Here is all you need to know about competitions.
There will be all sorts of different competition you can join more than one, as many as you wish. You can only join one if you want. But all you have to do is look through the competitions and see if any interest you and join. There will be separate Rules form the competitions so when entering make sure your read them first.
Thank you for reading that should be all you need to know for now!
So go ahead and join one!
Also Competitions that are still running will be sticky ones that are old will not be sticky and locked.