All this stuff is a bit far down the line for you at the moment Bob. You must make a decision first on whether or not pursuing a career in commercial aviation is the right thing for you to do. Without trying to put you off (which I aint
) you have a bit of hill to climb before deciding how you are going to tackle getting work with the airlines. Like I said, if you truely love it and believe it is right for you. Go for it.