You wanna get strong arms?
Go to the fucking gym like I do, and train your intire body. Nothing more said than posers who think they're tough because they get gelatine arms.
You wanna get buff?
Do Deathlifts, bend-over rows, biceps curls, squats, military press, Bench press, ...
Any retard can get somewhat muscle by simply doing XX push-ups a day, the key is keeping it in proportion.
There is a reason people say you have to go to the gym/buy professional gear in order to get big. And that reason is that you need to go to the fuckin gym and need professional gear.
I won't even start on the dangers of training alone, as you're proposing. Always make sure you have a "spotter" (A simple friend is enough) with you, in case he something goes wrong. (I'm at semi-heavy weights right now, having an arm-faint during a Bench-Press could easily crush my chest/neck)
EDIT: Go to professional body-building forums, and there is enough people willing to even MAKE A SCHEDULE FOR YOU!
As for the arguement of reps:
It's quite simple actually:
The MORE of an excercise you do, the more you're working on the muscle's "condition". The MORE WEIGHT you do in an excercise, the more "Strength" (and thus bigger arms) you will get.
The Ideal is often found in;
3x5, 3x8 or 3x10. With about a 1 minute-2 minute cool down in between every set. (So it's, for example, 5 benches, then you cool down 1 minute, then you do 5 benches again, then another cool down, and then another 5 benches)
It is also not preferred to work out every day. (Unless you're in the big league, which is unlikely if you're here on Sythe)
Also do 1 "work-day", 1 "recup-day". (There is no point in training when your muscles are still recovering from last day, all you'll do is end up hurting/ripping a muscle)