Hey shaleen,
The only thing which will let u to ur goal is curiosity. Read whatever u get on computers. Select a particular domain which is of ur interest. e.g. networks, scripts, communications, Operating Systems and things like that and than take a book and make it a point that u don't leave it before u complete it.

Slowly and slowly u will start understanding how things work and that will increase ur knowledge.

in short "If u are planning to steal, u should be sure of the enter exit doors "

In