after trying to promote clickbank products and failed

leave your comments thank you

Don't just jump in Google Adwords without knowing anything about it.
I'd recommend you checking out some PPC threads/ebooks here just so you can get the idea. And then jump into it or else you are just going to lose money.

Good Luck!

A good start would be to have relatively deep pockets.

google adwords is an internet contextual advertisement system not a concrete paving service.

Another good start would be go to the Google Adwords forum here and read.

Another good start would be go to the Adwords threads on the forum and read.

find a hot keyword thats getting a lot of searches, no competition, get the kw for .01 per click, do a content locker, and bam instant cash flow.