Push Ups

It depends on the age and... well, genetics.
However, nevermind the genetics, you need to start eating like a monster and work out with heavy weights. And a barbell is a must, because the most important exercises (squats, bench presses) are done with it.
If you eat 6 times a day (only natural, "good" food) and workout intensively with heavy weights 3 times a week - in a couple of months you'll start seeing a bigass change, in half a year you'll be amazed and in a year, when you compare your pictures, you'll be astonished.

(example: if you are, say - 75kg, you should eat about 3000 healthy calories daily)

If you want to look better/gain mass, I'm sorry but you'll have to be serious about and give it 100% of your attention.

I'm pretty sure that getting a gym membership is a better investment than a good GPU or fast internet connection - it'll do you wonders in real life.

Also, for psychological purposes, I'd advice starting martial arts. You'll be amazed at how much more confident you'll feel.

After all, all his intelligence, big talk, material and social status simply disappears when you're right there, facing him with your bigass punch - he realizes that he's just an animal, moreso - that he's below you in the food chain (talking about conflicts in life).

School bag full of notebooks are perfect for the "weight lifting" part, and the best way to use these books.

Any good martial art recommendations?(except boxing, my father won't allow me to do boxing)
Also, can you please tell me more about healthy food?

Why not? What does your pa have against boxing?

Of course, as a russian and a Master of Sport of it, firstly I'll recommend Combat Sambo (no comment), Krav Maga (pure technique, is made specially for 21st century street fight situations - taking out guys with knives/guns e.t.c.), MMA (a lot of MAs mixed together), Muay Thai (one knee/elbow and the opponent is half a dead man, if not fully one already), Brazilian Jiu Jutsu (extremely good, even rivals Sambo, but luckily no BJJ master has ever taken me down). Also, you could try Wrestling (real greco-roman and e.t.c.) - gets you in shape extremely well.

These are the MAs that are real, ergo that you WILL use in a real fight and that actually will help you.

Now if you want something fancy and ineffective in a modern fight, something when in training they won't even touch you, try Karate, Wing Chun, Judo and e.t.c. (not saying that they are in-fact bad, it's just where are you going to find a good master outside of their respective countries, especially nowadays?)

Not just pulling that out of my ass, I actually was practicing them long ago.

For dieting/food plans and e.t.c. go to my Fitness/Bodybuilding thread in this section.

more than 50 in series, but once me and my friend accepted a challenge and we did 100 I go to karate classes though.