You can sell your ebooks through Amazon's Kindle program or Apple's iTunes Connect, which gives you access to a large majority of the digital-book reading market and the barriers for entry are incredibly low. You don't need to invest lots of money to make this happen, but you do need to invest lots of time, not only in writing the ebooks, but in marketing them as well.
Wow that’s a lot of very different kinds of topics you plan on covering, Rolland! My advice would be to pare it down to just 2-3 closely related topics that you can start to build an audience around… and from there, focus on just a small handful of activities that’ll help you attract some viewers/readers (rather than spending time on a lot of different tactics).
Mechanical Turk is Amazon's take on micro-jobs. These are small miniscule-jobs that you can do for other people, which they call HITs, or Human Intelligence Tasks. These are super simple tasks that anyone can do. Some examples are listing off some URLs with certain kinds of images for one cent, or recording a few phrases with a microphone for 6 cents.
When you sign up for Trim, they immediately begin analyzing your spending and look for ways to reduce it. They’ll call your internet service provider and negotiate you a better deal on the same service. Same for your cable package (or any other recurring service you have). They’ll also look for hidden or otherwise forgotten about subscriptions and cancel those if needed. Think of them as your bill guard dog. No one gets by without their permission.