Totally new beginner.. I'm going to be studying Mechanical Engineering at university in September too.
So far I have done one built in tutorial, the pressure plate, but there were a few bits which didn't work (I think the tutorial needed updating to be synchronized to SW 2017).
I came across an old thread recommending two YouTube videos per one built in SW tutorial. The thread was 4 years old so maybe some new ways of learning?
And the community looks welcoming