If you want to earn good money online, you have to develop some skills just as you would in offline jobs. There are many legit sites that you can try depending on your aptitude, inclination, or location. If you have the patience for repetitive jobs, you may try micro-tasking sites like Appen, Lionbridge, or even Remotasks. These sites are usually looking for remote workers. You may also try transcription sites. Scribie.com is one of the beginner-friendly transcription sites. If you are a writer, there are many opportunities and platforms for earning, including forum-posting, web content writing, academic writing, etc. Many workers of Humanatic have earned decent money from the site just for listening to and tagging calls.