In your blog you can publish many things, like share links, downloads, news etc.

If you are a teacher you can have a blog for putting homeworks for your students, and they can see it from school and from, their homes.
Many companies have blogs, they use them for publish news about the comopany, special events etc.





In your blog you cnan write your lessons if you are a teacher, you can publish lots of things for your students if they are learning equations or things of math you can publish videos, so they know better to do that.