Welcome Travis! It's absolutely fantastic to see people your age on here. Let me tell you one thing for sure, if you follow even half of MMM's recommendations / examples starting from 16, you will without a doubt be leaps and bounds ahead of everyone else and early FIRE will not be a problem.
First, I would strongly advise you to open a Roth IRA with Vanguard. It may need to be opened by your parents "in trust", but if you have employment income this is the best place to save for someone your age. Max out the contribution and invest 100% of your portfolio in VTSAX. You probably have read it many times before on here, but it's low cost, boring, well diversified, and based on your timeline it's by far your best option.
Try get into the habit of saving 50% of your income. Some may say it's stupid to save so heavily at your age, but form good habits now so they stick with you for life. Keep contributing, but don't ever withdraw. Try live off that other 50%.
Focus on school and get good grades! Take AP courses if you have that option. It's great to build a good work ethic and work on the weekends, but make sure you are not doing this and sacrificing grades in the meantime. You won't get rich off $9 /hr, but you will making $30 /hr+ by getting good grades and working towards a good career. Focus on going to a cost-efficient college like your state system and pick a good program. Fields like engineering, sciences, etc are the way to go. Maximize scholarships and grants. It's quite easy to land a few $1000 scholarships, just think how many hours you need to work to earn that same money at $9 / hr.
Don't buy a vehicle. Do whatever you can to avoid purchasing a vehicle for a long as possible. For most people this means you can go without at minimum until you graduate from college, maybe even for life.
Most of all, have fun and enjoy your age. The only thing you really want to do at this point is form these good financial habits. The rest will come easy once you have a career.