The Rec Rev can be accessed, well huge chunks of it, on Utub.
Besides BIAB what do you plan to use when recording?
Voice? Guitar? Keyboard? Acoustic drums? An outline would assist.
Almost anything can be recorded directly into your interface & comp with the right set up.
If you're happy with BIAB then I assume you'll be happy with amp sims etc.
Computer with specs to run your DAW & BIAB, good condenser Mic (NOT USB), decent cables, basic interface, decent closed back ear covering headphones and a DAW you know how to use are the starting points.
I started cDAW based with less -
basic computer, gaming audio card, patch cable to plug guitar/bass into the Aux or mic in socket & Cakewalk 9.3.
With that basic set up, a cassette recording of vocals and drums recorded elsewhere I managed to get this done...
https://www.youtube.com/watch?v=dixvycnri9g


Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe