I got to thinking (dangerous in my case) about how confusing GE was (and still can be) for me when I first started using it. It took me quite a while to even figure out how to create an Actor.

That thought made me wonder what some of you found the hardest concepts to 'get your head' around when you first began using GE? or in the case of those of you considering purchasing GE, what are you having the most challenge with?
Just my curiosity bug acting up again. TIA to those willing to debug it.
