There's an audience for everything, even if it's as specific as dollhouse furniture or organic dog food. With a niche e-commerce store, you can reach customers who seek your specific products. Building a business in a niche market can help you differentiate yourself from other brands and build your credibility and expertise. Look to social media or your own consumer needs to come up with a product to sell online.
These pay-per-click ads appear on your blog. Every time somebody clicks on an ad (which is supposed to be about a subject related to your niche), you make a few cents or more. Small amounts each time, but it adds up. This is extremely hands-off. You just need to get a code from Google, place it on your website - and the ads will automatically appear on your blog. Google will only show ads that are relevant to your blog so it's a good experience for your visitors and maximizes the number of clicks you get, meaning more income.
As an affiliate marketer, you help product owners who has an affiliate program to sell their products. Basically, you sign up to their affiliate program, and they will provide you with your affiliate link. Once you have that link, you can place it on your website, social media or wherever. As Long as you are speaking to the right audience, people who are in your niche (people who are interested in what you promote), and they buy a product through your affiliate link, you will earn a commission.
If you want the full story, you can check out my about me page (it’s a pretty cool story if I may say so myself). The short version is that I got started with affiliate marketing back in 2009 and was able to go full-time in 2011. I now own more than a dozen websites in several different niche industries. You can see a listing of most of my sites at RogersConcepts.com.