It’s a lot to soak in dude, I still feel like my questions are all over the place. Let’s see… as for videos…
Brian Alsruhe has phenomenal content in general. And also has interesting ideas on programming (including incorporating weak points) (he also is coming out of the other side of a rotator cuff tear, so pretty relevant)
Alan Thrall has great “general” programming tips (provided you can read through his sarcasm) I’m not a huge fan of Starting Strength, it’s just boring to me, but his other videos are good.
Jeff Cavaliere is a wealth of knowledge when it comes to rehab.
They all upload regularly, and you could spend weeks going through all their content.
As for weak points… that’s up to you. I generally will spend 10 or so weeks slamming out the main lifts, under different programs, with various progression schemes, and incorporate variations as “assistance work”, then I’ll rotate to using the “assistance work” as my main lift, and hit it hard and heavy for about 10 weeks, while banging out my main lifts under a lighter load to stay familiar. Just feel it out. If you’re making steady progression, dont fuck with it. If you’re having a hard time recovering, feeling aches and pains coming on, or just arent seeing much improvement, it may be time to change it up.
As for volume/frequency… its pretty simple:
Big groups (pecs, lats, quads, etc):
Dont need as much frequency week to week. You can really abuse them on the proper day, and give them plenty of time to heal (think banging out a 5x5 on bench, some assistance weighted dumbell press, and flys on the same day, very doable, but you’ll be sure for a few days)
Small groups (bis, tris, delts, calves, etc):
Cant take as much abuse day to day, which ultimately leads to them healing quicker, so you can hit them several times a week. (Think a 3x8 on barbell curls, and a cluster set with hammer curls, sure, you won’t be able to lift your arms when you’re done, but they MIGHT hurt for a day)
(This is kind of an “idiot’s guide” oversimplified explanation, but it’s a good base to work with)
Just a side note, your bicep connects directly into your shoulder, and could aggravate the symptoms. It did for me, and I’ve pretty much dropped all direct bicep work. Maybe not, but just something to watch.
As for rehab, I’m a firm believer in “pushing through it”. But not in a dumb way. I think taking too much time off will exasperate any injury you have. Give it a short time, go see a specialist if necessary, and immediately get in the routine of restoring proper movement and ROM. My back was completely shot for years. I couldn’t pick 135 off the ground. I decided to nut up and started deadlifting with aggressively perfect form, and went up in weight slow, and I just hit a personal PR of 375 x 5 beltless. It’s not that impressive, but i have virtually no back pain anymore. (Kiss my ass chiropractor).
My way of thought is by no means the right way or only way, and personally I think people make it WAY more complicated than it needs to be. Get in the gym, zone in, lift the fucking weight. Stay consistent, and smart, and dont forget the weak points. The numbers and size will go up.