Its possible for anyone to make money if they do it right, no matter the age. However, your blog content has to be well written, interesting and enjoyable in order to get readers. As for monetizing it (getting paid for what you do), you'll need a parent or guardian to do all of the agreements, acceptance of payments, etc., as these require you to be of contractual consent age, which is over 18.
Research Costs and Set Fair Starting Prices. Before setting prices for each item, research your local Craigslist website and nearby yard sales to get a sense of how to price them. Remember that many buyers will try to haggle, so set prices a bit higher than your bottom dollar but not so high you’ll scare off first bids. Roughly 10% to 15% higher is a good rule of thumb. Consider bunching low-value items, such as old CDs, into lots of five or 10.
If you have experience with marketing, SEO, or a knack for getting people excited about the products and services you use on a regular basis, think about refining your skills and putting them to work making money online as a small business marketing consultant in your region—especially if you can become a local SEO expert and can help local clients rank higher in their search results.
To get started as a game tester, sign up with a reputable network such as Keywords Studio, whose Global Beta Test Network (GBTN) helps game developers push their products to the limit and ensure they go to market with as few bugs as possible. GBTN’s tests typically involve dozens to hundreds of testers around the world running simultaneous tests on different aspects of clients’ games. Most tests are time-limited, project-based affairs. Pay varies but typically ranges from $20 to $50 per hour. Diligent, skilled testers who work part-time can earn $10,000 to $20,000 per year; testers who work at or near full time can easily exceed $50,000 per year.
If you want to clear some space out in your house and have a big stack of books you’ve been holding onto for too long, you can make money selling your books and textbooks online. Stores like Half Priced Books and others will give you cents on the dollar for each of your current books while you can check what your book is worth by simply entering the ISBN number on Book Scouter.
Take good pictures. Some of the options below don’t require you to actually take the picture and sell the product, but for the ones that do, make sure you take a clear picture that makes your product stand out from the others. If you’re going to be taking a lot of pictures, set up a small “studio-like” area in your home with a backdrop and proper lighting to really make your pictures come across as professional. And of course, you’ll want a good camera too.