I am worried that I might accidentally hurt someone if I learn psychokinesis. What should I do to avoid that?
The courses in the psychokinesis curriculum were created to help you learn how to control your abilities as you learn them. In essence, it is unlikely that your development will surge beyond your ability to keep control over or direct and focus manifestations. At most, you may have to deal with some minor or nuisance events that you will learn to be able to control with further practice as described in the lessons.