Welcome aboard! It's a good idea to set a budget and your base build (kit or fabrication setup) should start out with like 2/3 of your budget because you almost always run into some snag that's gonna cost a little something to fix. It is also good to know your mechanical aptitude. If you've never turned a screw you can't expect to be very successful very quick with the cheapest 2 stroke kits. Friction drives are the simplest. On the other hand you will learn tons by struggling thru making things work...nothing like hands on learning to turn a wrench.
Word of caution: these things are addictive & fun.