Here are some links and resources specifically for writers.
One of the most common questions I get asked is about my faerie folklore research. Here are some links to books that I found particularly helpful, many of which can be downloaded for free — plus books on cons, heists, vampires and more.
This is the GIANT MASTERPOST compiling all my favorite online resources and answers to lots and lots of writerly questions.
Writing Articles by Holly
Here are articles on writing including my NaNoWriMo advice and my “How I Wrote” posts tracking my word count for several novels.