u want to start with air and fuel, witch u can get form the easy/beginer bolt ons, exhaust, t/b, cai, gears, pullies then u want to do a h/c/i probaly close to each other cause a cam on a stock motor is not doing anything and can loose perf, so i would say start with beginer mods witch really arent going to do much for your perf like drop any secs on quater, but it will help your engine run stronger i guess, and when u get ur h/c/i it will be complete good luck
(best mod u can do for the price is gears!!)