HOw Can one make money here
The purpose of AdWords is to promote your product or service. The business idea you come up with should not be dependant on AdWords, because if other people have the same idea as you, click costs could become too high. A golden rule in business is don't rely on one supplier or one customer.
So don't start with asking about AdWords. Come up with a business idea, and then think of which of the hundreds of ways you can promote it best suit.
If you are looking to make easy money online, you are unlikely to succeed. Almost all successful online entrepreneurs have worked hard and gone through numerous learning experiences.