I have not even earned 15 dollars in the last six months LOL I am sorry that I am being negative but with me, I am really unlucky with Adsense....! Try creating an unique website with about 10k unique visitors per day, and you should be able to reach your goal; though not initially but over a period of time......Good luck!
first dont pay anyone to lean. Just yourself on google and learn how to earn. And it is possible to earn 15k. My one friend is earning over $50k but he have 7 adsense accounts. He never tell me how to earn $100/month. I learn my self and now my earning is over $100/month and soon i will cross $200 and then so on.
I think to get adsense revenue how we struggle to get traffic, more traffic we can get , more ads we revenue