I admit, I'm sporadic about reading blogs, even ones I like...
But if you are in this business, it's important to keep track of what's going on. So I do my best. I'm very fortunate that my fellow editors often provide useful links via Twitter.
I look for definitions of editing all the time. Why? Because people ask me to explain my job.
Kris Rusch, who is an amazing source of publishing knowledge, provides a little two-week course on editing.
Part 1: Editorial Revisions
Part 2: Hiring Editors
If you're a writer do go and learn from her, I pray you. Whether you're publishing your book, or in traditional publishing, or just trying to find out what all this means, Kris will help you at the Business Rusch.