I've never played a kingdom hearts game, but am curious to try. I'm a bit daunted by what I hear about the complexity of the plot(s) and am not sure how to begin. I have Birth By Sleep for the PSP and recently bought the full collection of everything for PS4. Does it matter how / where I begin? I'm a bit intimidated by having to play so many games, and would like to just commit to one (or two) at this point. I'm tempted to start with Birth By Sleep simply because its on the PSP and would enjoy a new portable game now. Is this a good/bad idea? What is suggested?