It took me a lot longer to get that starting from scratch but judging by your username you are a kopite so you're probably clicking your own ads. Just a joke....
in my first month i was having a geocities small piece of website and it gave me about 6$ about 2 yrs ago!
its alright if you just have one blogger site. I see you have made $0 on treasure trooper lol...I remember that site about this time last year heheheh I was one of the first one the bandwagon and made liek $300 in my first month using it, now you make next to nothing on that site...
It is good man. Add more useful content regularly.Wait for the results. Do necessary SEO. Submit articles to DIGG and Netscape. Track through Google analytics and Yahoo site explorer. Learning is a continuous process.
I think I made less than $1 my first month.. somthing like $30 in the second month.. it got better from there. .
I made about 2 bucks my first month. 2 years later I am upto about 5 bucks/month. Still have a lot to learn I guess