A few links to really interesting (and informative!) blog posts:
io9 on great character descriptions in fantasy and science fiction
Steve Dempster explains how writing events chronologically can make for snappier action sequences
Christie Yant advises you to quit writing, the next time you feel like giving up
Chuck Wendig on how to “unfuck” your story (NSFW)
Cat Valente details how there exists no one, correct path to publishing success