hey shaleen,
buddy it is no that difficult to learn anything but one thing that really takes up your time sometime is your field of interest. It's like you are interested in field of hacking but to go fo rwhat you will really like down the road depends a lot about your interest. My advice is get a PC and a few books on networking,OS, programming or even searching for these topics here will do. then try your hand on each of them for some time, it will give you fair idea of what you will enjoy and then move up from there. In beginning try little of these things because these things are in some way or other interconnected.
That's wha i learnt from my stay here and one more thing be patient. Good things take commitment and persistence.
Hope i got it right(this time :-)