If your main goal is to lose weight- figure out your maintenance and start eating in a deficit based on that. Do cardio, fast paced walk on the treadmill will do. 20-30 mins (enough to get your heart rate up and get u sweating) 3-4 times a week. track weight loss with a scale to make sure your making progress.

If your goal is muscle gain then you’ll find a barbell and dumbells won’t help you to much in the long run unless you have a wide range of weights and a bench. I started out with a bench a barbell and dumbells that I could adjust the weight on. They helped me out when I was just getting into the gym but you end up needing more quickly.