really theres lots of defenitions of "hacking". you can "hack" windows to change things around, or "hack" with bat files or command prompt, or "hack" your school to get past there firewall........ not that i would ever do that..............
really how you think of a "hacker" in the movies who randomly types on screens flashing binary code and magically gets access to all the governments secrets isnt real. real hacking is messing with code and changing programs around and is usually used for fun or good. get good with say, c++ programing if you want, or know allot of back doors, like using ip adresses, bat files, command prompt.
for example at my school i wanted to get an admin account and get past the firewall so it took me a year but i played around with things and used the create a shorcut button to get into c:/ and i could mess with other people files and get into ms-dos prompt, which is a command prompt with a different name (idk why) that the school forgot to make unusable, so i could use that to play with stuff, ping websites and find out the ip adress and then use that to try to get past (that was fixed by the school fast) , stuff like that, or i could use notepad to make a batch file to make myself an admin account on that computer, and do whatever i want. i could do allot more (hack teachers) i didnt and im not gonna tell you how.
anyway just get fluent with computers, play with them, have a computer dual boot linux and windows, stuff like that and youl just know stuff to hack with. learning a programing language will help allot to, like c++ or java is usually an easy starter one.
BTW i had like 3 other hacking buddies who helped with the batch file and stuff like that, i wouldnt have been able to hack the school without them. we were just bored because we finished everything so fast in tech class and never did anything bad on the hacked computers, we just played flash games on websites once we could go anywhere. it was pretty easy and im supprised we made it, i left a trail of hints for the next grade (we were in 8th goin to high school next year) to find out and stuff lol.