In my opinion anyone with the desire to learn how to rebuild is ready to buy a budget RBA/
rda and start tinkering, just don't expect it to be your everyday vape for a while.. you'll still be
vaping your trusty clearos for a while as you learn how to rebuild.
Get an IGO-L
Get some 32g Kanthal A-1 (if you plan to get into low res mech
vaping get some 28g also)
Get some wick material (many options out there, I prefer Nextel braided ceramic rope)
Get a multimeter and make sure you don't put anything less than 1.4ohms on a regulated device. Some regulated mods will work with lower res than that but if your mod has no resistance checker built in then definitely play it safer than sorry. It is easy to avoid damaging your equipment with a little diligence but it is also very easy to short out and destroy an unprotected mod if you're not aware of what not to do.
Start tinkering and asking more questions. The more you do it the more you'll learn and become comfortable with it all. It's really not that intimidating once you start getting some practice. Do keep in mind though it does take practice and patience.