How much muscle is realistic for most guys to gain in one year of weight training? I’d say on average about 30 lbs of muscle mass.
You can effectively gain about 30 lbs of muscle with consistent workouts and eating. Workouts don’t need to be elaborate, the basics have always worked for most guys!!
The quickest way to build a starting level of strength is with some staple bodyweight movements with a few small weights combined, and then transitioning into full blown weight workouts will be much easier.