The quickest way to look less skinny is to constantly eat crap and not do any exercise. The problem with this is skinny guys with big stomachs look grotesque (
unless you're 85 years old). You may be fortunate to gain weight evenly but you'll only know once it's on and then it's too late.
The alternative is to go after an athletic look which is a reasonable objective given your build. Forget buff and oily bodies, that's for gay parties. Think
strong,
fit and
healthy. These are the most important factors, far above looks and size.
Being skinny with small chest, wrists and arms doesn't mean you'll never look like some big guy. When you hit 30 you'll change, trust me. Just focus on the three key points above.
Strong
Gain weight and muscle by eating plenty of good food and lifting the maximum weight strict form allows. Stick to compounds exercises. They're the most beneficial.
Look at the mechanics of your body, it's push/pull.
Bench is push (chest), row is pull (back)
Press is push (shoulders), pull-up is pull (lats/sides)
See what's going on? You need to balance the weight to be effective. Your arms too have a push/pull motion, use weights to build on this.
The golden rule is that everything comes from a strong core. This doesn't mean doing 100 situps, the best way to build core strength is to squat as it brings everything into one exercise, it's the mother of all compounds. Start with your bodyweight to learn form, then add the bar, then with experience and assistance, add weight. When you can squat effectively, you'll find gains in all other areas far easier to acquire, even arms.
While we're talking arms, Morba touched on this. Your bicep is small, the muscle under your arm (tricep) is big. It's this muscle that will give you bigger looking arms, not biceps. Bear this in mind.
Fit
When cutting the excess from the bulking process, intense cardio to boost stamina and fitness. You'll be surprised how effective weightlifting itself it for stamina and cardio. I hate running and cycling, swimming is too much hassle to keep up the frequency so I box and also do more weights. Instead of lifting heavy and slow, I lift light weights and keep up the intensity and repetitions. Try doing 100 squats with 40Kg, it hurts.
Healthy
By eating good clean foods you'll properly fuel your body for the shock of training but here's the important part, form. Form is where the exercise you perform is correct in terms of working the muscle without risking damage to the joints or over-extension. Correct form will allow you to gain faster. The reason people rarely use correct form is because you'll struggle to lift far lighter weights than the people around you and ego/pride etc will often steer you the wrong way.
Lift a heavy weight incorrectly, tear a muscle and it's over. I still have problems now from being a knob in the gym when I was a kid, things I could have avoided.
Finally
This isn't the opposite of a diet. Fat women are always dieting because they're looking for quick fixes, it's why they were trainers but don't run.
It's a lifestyle, if you want to look big, you'll need to live big. If you want to look fit, you'll need to live fit. It's this commitment that stops the large majority of people from looking after themselves or taking shortcuts in the form of drugs.
Good luck with it and remember, people are here to help but commitment is needed for people to commit to you.
"Big arms in 6 weeks?" will get you shot down in flames
.
(and laugh) But you're an hour away..
Only thing with them is sometimes they can be so socially retarded they are weird.
