Please wait to make fuel. When you're old enough (read 18) you can certify & find a mentor and do it right. Until then you run a pretty high risk of getting hurt: especially with some of what you want to do. I'm not sure of any EX'ers that mess with micrograin propellants (zn-s) as making them is extremely dangerous, it has a low ISP and wrecks the rails you fly off of.
Yeah, as everyone has said, just wait until you turn 18.. In the meantime, fly some Estes rockets. Find a local club, and join in the fun! Flying regular motors (not experimental) is really fun, and take it from me, I'm 15.
Just don't mess around with making your own motors.. Not a good idea. As others here have mentioned, wait until you're 18, and then find a mentor, who can help you out and get certified with an L2.
Just trying to help you out, so that you don't get hurt!