I've been teaching now for a very long time and I think I might have a few generalized answers for you.
Know this. Drawing is everything! A 2B or 3B pencil is just fine. The first thing to get good at is simply making professional looking lines. When I was 16, I made over 400 drawings with an ordinary school pencil (probably a 2B) on regular typewriter paper (today's copy machine paper.) I got very good with lines. Learning to work a computer or a computer program, learning to paint in watercolor, gouache, oils, markers - is easy once you draw well. Not having fancy computer equipment at this time won't hurt you at all.
Copy others. Copy with great seriousness and dedication. You will learn faster this way than anything else you'd do. I was discouraged from copying and that was stupid advice. I could have gotten ahead twice as fast had I done serious copy work. Don't worry about creativity, individuality. That will come when you are artistically ready for it.
Let your art lead you. If you draw exactly what you want when you want to do it, you will eventually go from challenge to challenge and master everything. This has to be fun or you will simply give up. Have fun or you won't stick it out.