Commenting on blogs and engaging with other bloggers will definitely help your blog grow.
When I would comment on other blogs, they would comment on mine. I kept that going for a while and started to build a following.
One day, I mentioned that I had published a book of quotes. I included the link to it. People were actually going on Amazon and buying my book!
That’s marketing in a nutshell!
If you want to get into blogging, take an online course. I’m sure there are many free one out there. You could also invest an online course through a site like eduGAIN.