@thomaslowrens Initially I couldn't do a "real" pull up. I had to have my palms facing me and my hands close together. It was more of a row than a pull up. But I aimed for 3 per set. I couldn't actually do 3 per set, mind you, but that was the goal. When I couldn't pull myself up to finish a set, I would jump up and slowly lower myself to get my 3. Once I was able to do all 5 sets without jumping, I fixed my grip and started over. Once I worked back up to 3 per set without jumping, I added a 4th to each set, etc.
Push ups I started out attempting 10 per set. And again, once I could successfully do 10 every set, I'd add more.
Squats and abs are a bit weird. For squats, I already had a pretty good base because I had already been doing a lot of running. So I jumped straight into the one leg squats I'm doing now. For abs... I kinda just did 10 second contractions from the start as well. I'm not really lifting any weight, per se, just contracting as hard as I can and holding it for a count of 10. Presumably as I've gotten stronger the contractions are stronger, but since I'm always putting my maximum effort into it, it just kinda scales on its own.