Oh yeah, and one lesson you should learn early on is things like not drawing feathery lines. Try to always draw your lines in one smooth motion wherever you can, and mostly have a light touch. That'll pay off a lot in the long run.
Get in the habit of "drawing" with your pencil above the paper a couple of times before lowering it and making the actual mark. You can get surprisingly straight lines and accurate circles that way, with a little practice.
Feathering is actually a habit of mine (drawing a few different lines and erasing the the ones I don't like), so it's helpful to know that I should get out of that habit now for future stuff.
So far, I'm going back to the beginning and just practicing 3-D & proportions & drawing primitives like this video related: https://m.youtube.com/watch?list=WL&v=myv6B_DjiYE
I'm in a calculus class, and we're actually getting into 3D integration with finding volumes and such, so it's actually quite convenient to start with basic shapes like y'all said.
I actually wasn't expecting much of a response to my post, so my gratitude is without bounds.
Another thing I had a question on: I've been drawing with pencil and paper. Should I do it another way? I know a lot of people seem to use some type of computer/tablet drawing program or something. Does it matter that I am using pencil and paper?