Hi Glen and welcome to the forum and the world of BIAB.
Here are the highlights I gathered from your post.
. You are an upper intermediate guitar player.
. You have hopes of recording your work.
. You are lost on how to use this technology.
. After this initial investment in various software programs including BIAB and Studio One, you still have some budget left to use.
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Each of these listed specialties, being defined as a " branch of knowledge, typically one studied in higher education." although related to each other, are distinctly separate disciplines within their own boundaries. Which is your primary goal you didn't share and it doesn't matter. You'll naturally migrate toward your main interest on your own.
Congratulations for your hard work to get to the intermediate level of guitar. BIAB has many tools to help you get to the next level. For examples of some that have attained pro level proficiency with their instruments of choice check out
Video Testimonials. There are also testimonials by users working toward engineering, mixing and producing.
Recording is an art of it's own right and has a huge learning curve. If it isn't your primary goal to become an engineer, mixer or producer, then don't place to much focus on learning more than the bare basics of how to record clean, crisp recorded tracks and basic mixing.
That you're lost with the technology isn't a problem unless you make it one by losing focus toward learning advanced technology you don't need or you won't use. Learn what's needed to reach your main goal. There are only a few principles and techniques you need to learn to capture clear, clean, crisp and useable audio tracks.
From this point it's really a simple matter of you deciding your primary goal and use your remaining budget, time and resources toward attaining that main goal and then use the other specialty disciplines only at the level for the most benefit to your primary goal.
Here is a
Link to 'How to Record an Album on a Budget' on a post I made in another BIAB forum that isn't getting much traction but is an excellent example how an artist can focus on a goal while limiting the necessity of diving deep into other areas that rob time, resources and budget from the main goal.
Spoiler Alert: Giving away the plot but in the above article, the artist opted to use a simpler, quality hardware recording machine over available higher quality, complicated hardware and professional level recording DAW software. He was able to match the complexity and other features offered by the Pro equipment and DAW that would match the same had he moved to a Pro studio. (The artist did use Pro studios in the instances that was the best choice for recording specific instruments, but he saved a lot by doing everything else in house.) The bottom line is the artist produced a $45,000 project with a $600 piece of hardware recording/Software gear allowing him to focus on his strengths at a high level of competency.