Compound Movements
Compound movements are movements where there is more then one joint movement involved. So knees and hips, shoulders and elbows etc. Some have all the hinge ponts of your body moving. The first video is a clean and press, which is all movements.
Keep in mind these movements should be taught to you in person before you attempt them on your own. The weight is usually heavier then other exercises and you can easily hurt yourself or people around you. If you choose to try these WarriorTeams.com and your employer will not be responsible.