You can write very informative hubs with detailed information. Create your own style for writing and make the topic a very "Catchy Phrase" that many people will search for or relate to! You can also try researching and writing reviews of products to start, and writing or sharing your personal guide to relations of products, services, health, or any subject! The opportunity is endless!
You make money by your google adsense account. Each time your hub is viewed then you get page impressions. Each time someone clicks on your hubs ads, then you make money. Be sure to sign up for Google Adsense and sign up to Hubpages with your pub- number (located top right corner of Adsense account!).
Don't be afraid to experiment with photos, movies, polls, and extra features located at the top right of your editor.
I wish you well!