Alright so im new to all this weightlifting stuff (i've only done a little of it last fall) so I'm wondering what weight of dumbells i should use along with weights on the bar for bench press, etc.
To help you help me I am skinny, 150ish pounds, 6'1...
Also, I'm going to start the routine when summer starts (getting gym pass then) so I was wondering on the days of break should I run for like 15-30mins? or would swimming be better? or neither?
Don't run, that'll make you skinnier (you don't want that, 150 is small as it is). Try body weight exercises. Also, get a broom stick or something and perfect your form on everything. That way, once you get to the gym, you'll be ready to go.
There's no way of knowing what weight you should use. There are 150 lb people who can bench and squat less than 100. There are also 150 lb guys that can do a lot more.
You never know until you try, so I would suggest starting with the bar and 20lb dumbells and just work up to whatever works for you. Work up slowly by adding about 10 lbs each time. Don't think just because the 45 lb bar felt easy that you can put on 200, because you will get crushed.
Use the lightest you can get your hands on and work your way up. The single most important thing for a new lifter is form: do not add weight until you are sure you're doing it right. Nobody in the gym gives a **** how much you lift.
The amount of aerobic activity you do depends on your goals. What do you want to accomploish?
Well during the days off and when i get home from the gym I know im going to do crunches...BUt i want bigger and broader shoulders/arms and back. Thanks for the tips!