Adwords Budget

I do AdWords?
Google AdWords, I do not charge by the click and budget. They say for example u put $ 90 on a budget they spend $ 3 per day ?!?!??! What does this mean?!?!
This means that every time someone clicks on your ad they charge you, they stop at three dollars per day. So if a person clicks on a maximum of three dollars, they put your ad on a page number high
adwords Budget Optimizer – Good for Google, not for you
