8 Weeks, 3x per week
A beginner plan for getting started with the gym and strength training, built on machines. One full-body routine, three times a week for eight weeks: Monday, Wednesday and Friday, with a rest day in between.
Training the whole body three times a week means you practice every movement often, so you learn the patterns quickly and get stronger fast. The machines guide each movement, so you can focus on effort and control.
Progress: pick a weight you can lift for the bottom of the rep range with good form. When you reach the top of the range on every set, add a little weight next time.