Here are some sites that may be able to help you accomplish your fitness goals. These sites focus on the mechanics of exercise and the anatomy of the muscles and how they work. Learn different exercises to add to your own workout regiment and gain knowledge in the fitness field.
PLEASE REMEMBER TO ALWAYS BE CAUTIOUS WHEN USING DIFFERENT EXERCISES!
I hope you find these links beneficial, and if you have any questions you can contact me directly here.
The video below is an introduction to basic machines.