My Red tail Boa

Question
i have a couple of questions, first how do i find out how old my snake is. Second how do i find out if its a male or female, and third how do i know what breed of boa it is i hear about Columbian and so on and so on.

Answer
Age is not something one can definitively determine.  Sex is found by probing the cloaca.  And species can be determined by sight (say 90% of the time).  I'd suggest you take your snake to a store specializing in reptiles for assistance (as I'm guessing you're not getting any from the person you bought it from), if no such store is available perhaps a near-by reptile show/sale would be a good place to look for help.  Where do you live perhaps I can suggest a place.