Welcome to HubPages!
First of all, sign up for Adsense, Amazon and Kontera to start earning. However, signing up does not mean that you will definitely earn money but you will (after some time).
Secondly, writing is great but you need to be patience. Money will flow in slowly but surely.
Third, write quality content, have a bout 400 words or more (1,000 words are better), remember to put inportant keywords (tags) and finally, try to promote your other articles by using the Link capsules.
Lastly, if you need any help, throw me a question and I will be glad to assist you in anyway possible!
Good luck and glad you joined HubPages!