If you want to improve your entire body, and you can go to a gym, I recommend you the training StrongLifts 5x5 Basically you will focus on Deadlifts, Squats, and Bench Press on your workouts, as well some others compound movements, or you can do a Weightlifting training, it depends on what you like too. Search for some videos and see if you like it.
Don't be scared if it looks hard because most of the exercises you will do with a bar and plates, it's just a question of time to you learn the proper technique, using a minimum weight on the barbell you can do it safely.
Don't be scared if it looks hard because most of the exercises you will do with a bar and plates, it's just a question of time to you learn the proper technique, using a minimum weight on the barbell you can do it safely.