Bodybuilding.net - Bodybuilding Forum

Hello my name is Ryan and ive been readin the forums lately to get information but im not getting everything i need. i'm 16 years old and ive started lifting a little before feb. of this year. i weigh around 145 through feb. to now april 19th i went from being able to bench 120-160. i have no idea if thats good also how long should i workout what exercises should i do? how often i have a weight machine sorta like a bowflex but not a bowflex exactly also i have dumbbells that i can add weight on them. i have no idea what most of the exercises are called for dumbbells they r 22.5 lbs and exercise i do w/ them r standing up and doin curls? i guess there called neway i want more muscle but i also want it to b shown thru i dont have a ton of muscle right now so was wondering if i should bulk up high weights low reps or lower weight high reps so an over view of everything is
1)how long should my workout be i kno u cant b exact but estimate would b helpful
2)how often should i work each muscle
3)what exercises should i do and also im not good at knowing all exercises so some i may need n a little explanation on how to do them
4)high weight low rep or low weight high rep
thank u all very much for your help in all of this any help will b appreciated