Just go to AdWords. Their setup is super easy and you'll have ads up and running in 10-15 minutes.
I would recommend Google adwords since they are very mainstream, but you can lose a lot of $$ if you aren't sure what you are doing. Facebook ads can help campaigns go viral but it's best to submit to content vs a direct website, whereas search engine searchers are looking for a specific solution to a problem (query).
sorry, jennifer1234 this is not Explain about Google PPC in some words. use you tube for learn PPC ADS
Use adwords campaign, its very helpful for ppc.