SEO (Search Engine Optimization) helps to increase the visibility of our business in search engine result pages. If you have some SEO knowledge and experience, you can make more money online via search engine optimization. All you need to do build a website or blog, write the quality content, research the keywords, and find ways to monetize it. The major problem with this, it will take a lot of time to earn money.
Here are some other ways to make more money with SEO:
Offer your SEO services to people who do not know about SEO and make money while promoting their business.
Create your profile on freelance websites such as Guru, Upwork and etc. If you are looking for some extra money with SEO, this will definitely help you.
The fact is local SEO is much better and easier than doing it globally. Connect to local businesses in your area that need the SEO services or connect to those local businesses which even do not know what is SEO?
If you have great and different skills in this area and can provide quality services then you should go for sites like Fiverr and Konker.
You will not get rich by following any one of the technique but you can earn extra money and build up your own business.