Newbie needs some advic

[fabi]

Hey!

I'm 17 years old, about 5"11 and weigh 140pounds. I started lifting weights 6 months ago and now I made myself a new program to get better results.
My aims are to build up muscles.
That's my program:
Day 1
Bench Press 3-4 sets 8-12 reps
Pullups 3 sets 12 reps
Incline 3 sets 8-12 reps
Lat Pulldown 3 sets 12 reps
Decline Press 3 sets 8-12 reps
Abdominals 3 sets 15 reps
Abdominals-side 2 sets each 12 reps
Wrist Curls 3 sets 12 reps

Day 2
Overhead Raises 3 sets 12 reps
Preacher Curl 3 sets 12 reps
French Curl 3 sets 12 reps
Lateral Raises 3 sets 12 reps
Biceps-Bar 3 sets 12 reps
Triceps-Strap 3 sets 12 reps
Abdominals 3 sets 15 reps
Abdominals-side 2 sets each 12 reps
Wrist Curls-reverse 3 sets 12 reps

Day 3
-rest-

Then it repeats. I'm playing tennis 3 times a week so I dont do any leg exercises. Would that workout be ok?
I'd also need some advice about what to eat. Being in High School, I'd need some tips for snacks because I usually workout in the morning.

Thanks for your help

Fabian