You need to start read what people are telling you. People, including me, have already answered the questions...
But to simplify it for you:
Adderall: 20-40 mg is a normal dose if you want to get high. Swallow the pills (crush them before if they are XR, if they are IR don't crush them).
Xanax: 1 pill (2 mg) when coming down from adderall (5-6 hours after taking adderall). After you've taken xanax, no more adderall.
jesus christ your 14 and all ready screwing around with drugs for fuck sake whats happen to being kids these days ?
old fart rant over with