Hi Sandra, I am a vegan personal trainer and gym manager and work with a lot of people who are using the gym for the first time. I always encourage people to start lightly with just a few exercises and only 1 or 2 sets. See how sore you are the next day and from there you will know whether you need to do more or less. I love Zuzanna's website and workouts but I wouldn't say they are for beginners. What tends to happen is people don't exercise that often, they feel guilty and then go to the gym (or do a home workout) and overdo it to try and make up for their guilt. Really we need to be consistent and gradually overload the muscles which will make them stronger (and ultimately change shape to produce a more aesthetically pleasing body). I hope this helps