Fusion 360 is a Mickey Mouse program and I don't see how anyone can possibly learn 3D software on such an amateur platform. I have worked on every other Mechanical 3D design software (Solidworks, Inventor, Pro-e, Unigraphics) and this little fiddle around program is totally useless and a huge waste of time. Rather skip this rubbish and learn on a proper program that will not frustrate the hell out of you.