In light of all the excellent advice and information given, and from your responses, the best piece of advice I can possibly offer is to read the PDF manual. BIAB is not a plug and play system you have to learn how to best use it.

Start at page one, and work thru every section, not only reading, but applying the techniques outlined for you. You will soon see how to change instruments, use the piano roll editor, etc. Convert a midi track to audio, and there fore have much more control over the final sound of that instrument, etc.

Watch the tutorial demos, play with it, make changes, as long as you don't save anything you can't screw it up. Most important don't expect to be an expert overnight. Trust me.........

Good luck.