Consider selling in lots. A lot is a collection of similar items that is sold in a group. For example, if you have a collection of books, magazines or similar pieces of jewelry, consider selling them all at once in a lot. You many not make as much money as you would have if you sold each item separately. However, the items will likely sell more quickly in a lot than they would individually.
Find a profitable niche. Starting with your interests, write down as many niche ideas as you can. Think about topics people might search online. Ideas include passions (like surfing or body building), fears (like spiders or speaking in front of crowds) and problems (like getting out of debt). Do keyword research to see it others are interested in the topic. Find out if a domain name is available that matches the keyword 100 percent. 
Research individual companies in your desired niche: If possible, it’s always better to become an affiliate directly with a company (if they have an internal affiliate program), as no one else will be dipping into your commission rate. This is the preferred route for most of the prominent affiliate marketers, including Pat Flynn. Unfortunately, it’s also the most work, as you’ll have to do the research yourself to see who offers programs (they’re usually listed in the website footer).
You may have a strong opinion about politics or that you have something to say about AIDS prevention in South Africa. You may believe there is a serious conspiracy going on with the NSA surveillance program, or there is a serious lack of compassion in our society nowadays. You would like to talk about the great sex you had last night, or you just want to let go of your frustration after a tough day in the office.
Be professional. When you submit a résumé, don’t type it in ALL CAPS and please don’t avoid the caps lock like the plague. Know how to use it without looking incompetent. Write in complete sentences with proper grammar. Of course, there will be exceptions, but even with the exceptions, you must keep it professional. You’re building their view of you.
Work as an online interpreter or translator. If you’re fluent in a foreign language, it makes sense to look for work as an online interpreter or translator. Depending on your individual skillset, you could find work translating blog posts or eBooks, transcribing recorded lessons or speeches for clients, or translating through Skype or another online video service. And, thanks to the increased use of foreign languages in the United States, getting started could really pay off. According to the Bureau of Labor Statistics, employment for interpreters and translators is expected to increase 17% nationally through 2026.
In the past few years, craft marketplaces have popped up all over the Internet and offer a place where you can sell your handy work to those who appreciate handmade items. Etsy is the most popular marketplace out there. You can create your own web store on this site and list your handmade crafts, vintage items, and craft supplies. There are plenty of other sites on the web that cater to arts and crafts of all types. You can earn some extra money while enjoying your favorite hobbies.