Hey welcome! Don’t worry, the plans are pretty plug-n-play when you first start out, so don’t feel like you have to become an exercise physiology expert overnight. Or ever. 
You can navigate inside a workout, so when you’re feeling done you can fast-forward to the cooldown.
I started from ground zero in February, with no prior training or experience or anything. I was almost completely sedentary. I did yoga sometimes, that was it. I started the Sweet Spot Base Low Volume plan based on this support article that talks about base training, and sort of blindly trusted that the Ramp Test at the beginning would scale the plan to my fitness (or lack thereof). That’s exactly what happened, and I managed to finish every workout. If you’re looking for a plan and you’re new to structured training, I recommend that one.