I've recently started mturk. I've made just over $200 over the past 5 weeks, with about 2-3 hours a day. The more you do, the more opportunity and "jobs" become available, as some require specific approval ratings. One that I personally enjoy is transcribing audio, which I just became approved to do. Anywhere from $.08 to $.15 for typing 15-30 seconds of audio. Some pay better.
Join a startup accelerator: Another great option is to apply to a startup accelerator like Y Combinator, 500 startups, or TechStars, where a group of investors will help coach you, connect you with potential partners, and provide startup cash in return for a small stake in your company. The competition is tough to get into these, so don’t rely on them as your only path forward.
Upwork: This website offers a great marketplace for selling just about any professional service. You don't need a merchant account, website of your own or anything else for that matter. All you need to do is be able to provide a high-quality service at a reasonable price. But be informed, you will have to compete with many others that are constantly bidding on open jobs.
2. Use your hacking skills for good. If you know how to adeptly hack into websites, put your skills to use with HackerOne.com, a platform that pays their network of more than 100,000 hackers for finding and reporting software vulnerabilities. According to data on HackerOne's website, 12 percent of their hackers make $20,000 or more per year. Approximately 3 percent of the hackers are making over $300,000, and 1.1 percent are making over $350,000, according to HackerOne.com.