I feel like I am doing something wrong, I am new to using adwords so I dont have any experience over it, But I thought it would be simple, you choose the keywords related to your site, create an ad that looks interesting set a budget and thats it.

I got 3 clicks and that cost me like 2.40, which seems a bit high, although 1 of those clicks I got a customer, but still it still seems too high, the next day I only had a couple of clicks but no new customers.