Hi, i'm new in the forum, just singed in.I was thinking of doing a nice science project next year, which i will be on the first year of High School. My main goal with this project is to exceed the limit of 14 km of altitude. I'm not an expert in this subject but i have time to learn. Below will be the questions i have: Dimensions, what would be more efficient? Fuel, what should i use? Basics physic(and chemistry) subjects i should know before starting. Expanses, is it too expansive (not a big problem but i have to know if i'm going to spend $500 or $5000)? Launch site, where would be a good place to launch it (a desert or something?)? I'm really a beginner so anything you can tell me that will help me with this will be very useful, but please understand that what i'm trying to do is greater than that bottle rockets. P.s: Sorry for any mistakes i make, English is not my native language. And please don't judge me , i'm just a guy with an idea.