To find a blog relating to a discipline, you'll want to search the internet.

Using your discipline, or area, search the internet for a blog.

• [discipline] blogs

When looking for authoritative blogs, it may help to look at articles from reputable journals that list "blogs you should be following".

For example, on Google, search:

• nursing blogs

For more information on evaluating sources on the internet see the library guide Internet Searching Tips.