If you're serious about making money online, start a blog. Blogging is one of the easiest and most sustainable income sources. As long as the blog is setup the right way, in the right niche, with the right content targeted at the right audience, and the offer is complementary to the content, you could make a tremendous amount of passive income from a blog.
Their policies are strict. Be sure to read through Amazon’s affiliate program policies very carefully. Any violation of their policies is grounds for account suspension--something which could be devastating if you build an entire website or store around affiliate links. Amazon has also been known to suspend accounts without any prior notice, so tread carefully.
Has anyone ever told you you have a voice for radio? Are you great at creating original characters with just your voice? There are tons of people looking to pay for quality voice overs for their corporate videos, animation series, or educational videos. Check out Fiverr and UpWork or create a profile on a specialized site like Voices.com or The Voice Realm to get started making money online doing voice overs.