Hello everyone!
I'm 15 years old and I'm a pretty average building towards the skinny side.
I got myself some very nice whey protein and want to start working out.
I'm afraid I might overwork my muscles though, is 48 hours enough rest between specific muscle training?

btw: im going to train the **** out of them until I cry.

I'm aiming for:

Monday - Biceps / Triceps
Tuesday - Abs / Pecs
Wednesday - Shoulders

and just train each muscle every 48 hours.
is that reasonable?

also: should I start as heavy dumb-bells I can? Thanks for your help guys.