Putting together a workout plan can be complicated if you’ve never done it before. I recommend for the most effective workout to do 3 sets of each workout, within those sets you can decide reps based on your goals. If you’re looking to add muscle mass, then stick to low reps of 1-8 and heavy weight. If you’re looking to just tone, stay in a median rep range of 8-12, and if you’re looking to lose weight then do a mixture with heavy weight. Also while we’re here aim to do minimum 3 exercises per muscle on your body. So for legs that maybe, squats, leg press, and lunges. For back that maybe underhand row, wide pull down machine, and stiff-legged deadlifts. For chest this maybe, incline barbell bench press, dips, and incline chest flies. So remember 3 sets, of 3 exercises working 1-12 rep ranges for each muscle.