If you have a business, you want to get listed on Yelp! You may not use the software, but some people do, and they use it religiously (and I don’t mean they’ll kill you over it). By listing your business on Yelp!, you’re putting yourself on the map. From here, you also need to start using Yelp! Write reviews of places you go. It’ll be worth it in the long run.

This isn’t to scare you off. I simply want you to know that this guide is going to focus solely on ways to make real, sustainable extra income online. Not just a few bucks. I want to share all the mistakes I've made that got me to where I am now so that you don’t have to go through them, and can build a successful online source of income for yourself.
If you have a good idea for an app, and the skills to create it, then producing your own premium app can be profitable. However, with so many free apps available, it may be hard to convince people to pay. If you want to go down the premium app route, consider having a basic free version to encourage people to download the app in the first place. You can then provide the option of upgrading to a premium plan once users realize how useful the app is.
In my (unpopular) opinion, getting a raise is harder than getting a promotion. Think about it from your boss’s perspective, would you rather a) pay more money for the same service, or b) pay more money for additional responsibilities. Alas, if you feel you’re overdue a raise, check out Dr. Randall Hansen’s article on Getting the Raise You Deserve. There are some really useful strategies there.
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.