Hi Arun, Red Hat is a commercial Linux distribution. Once you pay for your subscription, you'll get all the help and documentation you could possibly need.
If you want a free alternative, you can try CentOS. It is basically the same software with the Red Hat branding removed, and has no cost (or paid support).
With either option, you'll need to read the instructions and understand what you're doing. There is no short cut.
You should start by reading this:
http://centos.org/docs/5/html/Installation_Guide-en-US/
(edit) I should also probably ask, is there a particular reason why you chose Red Hat? It does not have a reputation as a good choice for first-time Linux users on a personal computer; its niche is servers and workstations in a corporate environment. You might find that a distribution like Ubuntu, Mint, or Puppy is an easier introduction to the world of Linux. But it is your choice in the end, good luck!
