It honestly depends on what your short-term goals are. Do you want to use your blog's content to sell YOUR product or do you want to sell someone else's product via your blog?
In both cases, it can be a very time consuming process to make any noteworthy return.
If you want to sell a product that is not your own, a couple of monetization techniques could come into play. Some might work for your blog, others don't - there is a lot of trial and error.
1. Affiliate (clickbank, skimlinks, amazon [they even have a great shop system which you can easily implement for free])
2. PPC (Adwords, Chitika)
3. sponsored posts / reviews (linkworth, seedingup, weavemade)