Pay per click to advertise?

[Peace]

Can someone explain this to me, please? I'm trying to advertise my website and I'm thinking about using Google's Adwords to help out. It's understandable that since I'm advertising using Google, I would have to pay them but what I don't understand is the amount to select. This might sound like a silly question but I have to make sure before making a mistake. When choosing the budget, does it really matter how much you select? Like would it advertise more if I raised the amount? What's good enough amount?