I had a dream about getting in a fight with Chuck Norris.
I woke up with a black eye.
But seriously,
People chase after that which runs and run from that which chases.
If you are the subject of a bully (assuming you are both male), do not make threats you cannot carry out. Stand your ground, and be prepared to put him in the hospital. Pick a body part and break it. Go for an ankle and bite it. Get ahold of a finger and snap it. Grab him by the collar and repeatedly smash your forehead into his. Yes, you will be injured as well, but you will develop a reputation for being, "Not worth it."
I had the shit beat out of me for about a decade until 12th grade when I finally said, enough was enough. You picked a fight with me, you went to the hospital. Unless you are going to kill me, you will not be walking away. After two fights like that, I didn't get bothered again for the rest of the year.
Bully like to grandstand. If you are quiet and completely fuckin' insane, there are easier targets.
Certainly, you shouldn't find out where he lives and then go to the guidance counselor for one of those big books of Colleges that include those business reply cards in the back. Because if you filled out all hundred-odd business reply cards asking for information and fill in the Bully's home address, he'd be swamped with snail mail spam for YEARS.
Calling up mortgage brokers and asking for information about getting a mortgage about the address of your Bully would also be rude as it would flood his parents with harassing phone calls and spam. You shouldn't do that either.
Let's not even get into how you shouldn't open up checking accounts in your bully's name and then use that to leverage his credit information before leaking it onto the internet for scammers to steal. That's just wrong.
You should never ever do any of these things because they are illegal and immoral. You are far better than that.
And writing all these suggestions down in a book like you are planning to do it and letting people find said book would be the height of deception as well. People might think you are a complete sociopath and thus avoid picking a fight with you like the plague.
What you should do is take up running.
Long-distance running/biking is a very healthy thing to do and it is something that will serve you well for the rest of your life. I took up biking 32 miles every weekend from 10th grade on and while I was still rather fat, under that fat was a core of muscle that could take a hit.
REMEMBER: the one constant in all societies for the right of passage of males is some test of endurance.
You have not become a "man" until you can prove that you can endure suffering. Be it a hunt for an animal, sitting in a sweat lodge, camping out in the wilderness, or drinking 21 shots on your 21st birthday (a stupid thing to do. Good way to get yourself in the hospital), every rite of passage for a boy turning into a man is proving how much pain you can put up with. Which really is a man's role in this world.
The only unconditional love you will ever experience is from your mother or a dog.
Otherwise, everyone will look at you and love you conditionally based on what you can do.
Women are human beings, Men are Human Doings. If you aren't doing anything, what good are you?
So unless you want to be kicked to the curb and ignored by society as a complete loser, increasing your endurance and ability to take a beating is the most fundamental physical skill you can develop as a male in modern society. Strength is fine. Learning how to fight is fine. However, the ability to stay awake for 48 hours straight handling shit while your pregnant wife is stuck in bed and vomiting is a talent you will use far more than muscles.
You can get a gun to win a fight.
You can use equipment to help you lift and move things.
The ability to just put up with shit for days on end without complaint or showing weakness is fundamental to being a man in today's society.
BTW, never show weakness. Ask for help to solve problems, but don't show weakness. Nothing is more disgusting to a woman than a weak man, especially a man who cries. Sorry if this sounds strange, but it's honest and the truth. As a man, you are alone and nobody cares about you. The sooner you realize nobody is going to save you and that you can only rely on yourself, the sooner you can move on to enjoy the many perks that come with being a successful man in today's society.