This seems to be a sentiment shared by many trainees, being overwhelmed by what program, exercises, sets/reps, supplementation, etc to do. There are two important points–one is to trust a program given by a coach and follow it as closely as possible from start to finish. It’s ESPECIALLY important for novice trainees. It’s so easy to spot novices on these boards because a) they switch programs every two weeks, and b) they try to modify or blend programs, probably because they don’t trust the design or because they want to have everything at once. The second point is, when you are beyond novice and have gotten to use and experience a variety of training methods, exercises, etc and learned what works “for you,” training should be more creative. Intermediate/advanced people just don’t ask for a coach’s or anyone else’s blessing on what to do, they just experiment for themselves and find out!
I think of training like going to culinary school. When you set foot in day one, your job is to shut your mouth, listen, and do what your told. You are taught a many, many varieties of ways to reach a variety of goals, but only if you listen and apply. When the time comes, you go off armed with your knowledge and tools, and you create your own master pieces. Learn all you can and figure out how to make it work for you.