How to start learning SEO?

The SEO niche has appeared relatively recently and in such a short period of time has already managed to become one of the most popular niches for making money on the Internet. But as we know, where the big money is found, it takes a lot of work.
As with any work, the hardest part of SEO is learning from at least some material. To get started, you should learn about basic concepts, for example https://seologicdigital.com/ppc-advertising/
In this article, you will learn about PayPerClick promotion. This information should kick-start your SEO studies.

I want to improve the ranking of my site on Google. What should I do? Do I need to hire a SEO specialist or can I do it myself?

I suppose you need to cooperate with SEO. A competent professional will help you achieve the desired results in a faster time frame. You won't waste your time and energy promoting your product by yourself. I recommend you read some tips for improving your website rankings if you still want to figure this out for yourself.

If you want to learn SEO, then you can watch YouTube videos.

There are various courses on this topic. I'd recommend following Brian Dean, and Sam OH from Ahrefs. These guys are genuine experts in the field of SEO.

Hello, there are bunch of sites on YouTube through which you can learn SEO.