How to build Biceps and Triceps?

Use weights to do exercises. Go to a gym and ask for tips and techniques.

do weight training, do the 1:1, same sets and reps on both muscles, for biceps do BB/DB curls to hit the two heads of the biceps, for triceps do cable triceps extension to warm-up and bench dips/close grip bench press to hit the three heads of your triceps...there are lots of great routine for this muscle group on the web...try to visit bodybuilding.com ....remember the three basics of building your muscles, workout, diet and rest/recovery...