Regarding selling stuff, and other ways to make money, look into affiliate sales. Some things that you can do:
-- If you are discussing music, or TV, you can link to those shows through iTunes and make 5% per download. This is not much, but iTunes goes through Linkshare, which pays out with no minimum. People may not be willing to pay $12 to buy a CD and wait for it to be mailed, for example. but they'll pay $.99 to download one track off the CD.
-- Check out Linkshare's other merchants; you may find some that will match the theme of your blog.
-- If you're talking about a book, gadget, etc. -- sign up for an Amazon account and link to it through Amazon. Depending on the product, Amazon pays between 4% and 20% of the purchase price.
-- Once you have an established blog with a good
PR (search engine) rank you can sell links. This has some drawbacks (if Google catches you, they'll reduce your search engine rank, most notably) but it can make more money than advertising in the short term.
-- I don't know if Blogger allows this, but Kontera (Kontera.com) is a nice companion for Adsense advertising.