Basis thing about Adword I am newb i have some question about using this, do my site have to be good first to be able to advertise? And how the cost will be calculated? I heard it's 0.01->0.1 a click
Firstly, because you are paying for every visitor to your site, the higher your conversion rate is, the more valuable clicks are, and the more you can afford to pay for them. Since Adwords is basically an auction, if your website doesn't convert as well as your competitors' website, you're going be struggling before you start. The cost is a bit more complicated. Firstly, you can set a limit on the amount that you pay per click, and the amount that you spend in a day. Where you appear depends on your bid, the bids of your competitors (as I said, it's an auction), and Google assessment of how relevant your website/advert is to the searcher (this is called the Quality Score). If people are clicking on your advert, your website is relevant, and Google thinks you look reputable, you'll get a higher position for your bid, and a lower minimum bid.