Ignore all the advices above. The key to strong biceps is to first develop your core and legs through exercise like squat, bench press and chin ups (chin ups works your biceps too). These exercises will release growth hormones and promote general growth. Once you have a strong core then you should target your biceps with preacher curls rep range of 5-8 (a weight that doesn't allow you to go more than 8, by now your biceps are hardened with chin ups). 3 sets of that and then do 2 sets of DB curls with a light weight with a range of 12-18. Shouldn't take you more than 10 mins and only twice a week. Look at me and no roid seriously (I don't how many times I've been accused of using roid). Diet is important too, about 1 g of protein per pound of body weight for beginner, 1.5g for advance.
I hate all those egg heads giving sh!tty advise just to sell some lame products. They've never put a foot in a gym!