Don't let age hold you back bro... Rico Constantino started training at 39, and Nathan Jones is 37. The first thing is try and find a good school, as many guys have mentioned, OVW is great, that is probably the quickest way to get there. However, they are very selective and they dont take just anyone, you have to attend a couple classes and then they will tell you if they think you have potential. Or, they sometimes hold a tryout camp (one just passed) and they take people in who once again show potential. OVW is the best because it is the WWE developmental center for all wrestlers, odds are if you are ever going to be in WWE, Youll need to spend some time there. If thats not probable, find a good one in your area, UPW,XPW,ROH,CZW (Hardcore),ECPW (Great at teaching fundamentals), these are some good schools as well as HWA. The main thing is, just show some heart, and don't get injured. If you want it bad, you'll raise above all the others who dont want as much.. Good luck bro.
-Howl