Creating and selling courses on your blog can be a successful way to make money online. The course itself should be relevant to your blog, and based on a topic that will benefit your audience. Although it may take time to create the course in the first instance, once completed, you can then repeatedly make money from the course each time you sell it.
A fitness site can have numerous revenue streams. Create healthy eating plans and recipes and lock them away as premium content. Promote and sell a fitness training course, eBook, or a series of videos. Or advertise your own personal fitness services on your site. Topfithub is a good example of a fitness site with decent video content alongside product reviews.
The biggest reason I love recommending Wealthy Affiliate to new affiliate marketers is because it literally provides EVERYTHING you will ever need. You don’t need to buy a domain name in one place then get hosting in another place while you sign up for training at yet another place. Everything you need is in one spot, for one consistent monthly cost. Plus, they don’t just provide the tools, but they give step-by-step training instructions on how to use all the tools properly. If you still don’t understand something, just ask the community or go into live chat, and you could get an answer in literally seconds.
High-ticket consulting or coaching: You could sell your own high-ticket consulting or coaching products from your website. You'll still need a website, merchant account, sales funnel, lead magnet and many other items. But you can easily earn a substantial amount of money from each individual customer, making it well worth the arduous setup required. 

Mow lawns in the summer if you can safely operate a lawn mower. Push mowers are safe for 12 year olds whereas riding mowers should only be used by teens who are at least 16 years old. Before you start mowing, ask your neighbor what height they’d like the grass, what parts of the yard you should cut, and if they have any special instructions (like not to mow too close to the flowerbed).[8]

However, like anything else truly worthwhile, apps require a significant investment of your time or money upfront. If you don't have the skills, then you have to hire someone who can assist you in creating a great app. But first you need to come up with an idea that will sell. Do the proper market research and analytics to come up with the right app.

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