Today I thought I'd post some resources that I used/am using to learn about the publishing industry. Post more in the comments if you know of some more!
The First Five Pages, by: Noah Lukeman
Self Editing for Fiction Writers, by: Renni Browne and Dave King
Agent and Publishing stuff:
Nelson Literary Agency Blog
Science Fiction and Fantasy Writers of America (oddly enough, many places recommend to join the author guild for your genre, but you can't join until you're published...)
Author, Author (They have some publishing stuff too.)
For the Love of Writing
Also, check the web page for your favorite author, they often have good stuff there.