earning money through blogging..

i started blogging a week ago, the real and main reason is to earn money, but how do we know the real process of earning money through blogging..
are we sure that the sites that we are connected wtih are the real helper..
it isn't enough that we know how to write english. a blogger should also know how to operate computer and internet aswell..
as a first timer like me, i dont know the do's and don'ts of blogging..
to someone who's heart that is kind and brain who has a adequate knowlegde of blogging and earning through it.. would you please help me..i need the money so badly!!! share your blessings with me, and god will do the next things for you...