Oh, please. I probably have more years in school than you have on this planet!
I wish I could continue going to school until I die (I might just do that). I love to learn new things.
I realize not everyone loves school. However, let me reassure you that college is not high school. Your relationship with your instructor won't be the same as it was in grade school. Your classes (for the most part) shouldn't be like they were when you were a kid. Your motivation should also be different.
You can continue to become more tech savvy on your own but taking courses helps to guide you in a structured way so you learn things in sequence and don't skip anything. Also, you get to ask questions of your instructors, get tutoring help, and join student organizations where you can share ideas with your peers.
I know this is an antiquated suggestion but they still have libraries.
If you can read a magazine, you can read a text book. They all come with DVDs and/or access codes for additional on-line resources.
When you do get a new computer, keep the old one for "experimenting."
Also, that's another reason to join a college organization. Our group had a workshop where we met together and helped each other assemble used computers that we could keep and take home after. The computers are kind of old and klunky but they're perfect for practicing new skills without messing up valuable family computers.
My college also offers tech students access to free software to download, including Windows OS and Office products.
It's hard work but it can be very rewarding.