I guess the answer to that question is that it all depends on what you want to do with BIAB. For instance I only use BIAB for live performance backing tracks so what I had to learn was way down on the curve as to what someone who does a lot of recording, note editing in the piano roll and even using the soloist and melodist features. So for me it was, and not necessarily in this order like this:

1. Choose style
2. Plug in chords
3. Choose instruments
4. Choose tempo
5. Adjust volumes at the bar settings level
6. Then tweak till it suits taste

And I learned this within a few hours back when you could download a trial version, and while I know the software has become more complex since then the fact remains that for what I use BIAB for it is still simply that easy. I guess the real answer is like it says on the new car stickers, "your mileage may vary". But please keep in mind I know very well that I have not even scratched the surface of what this program can do, with this said I learn something new every day or so both by reading this forum and by hands on use of the software.

Later,