I'm always trying to learn more and improve all aspects of my handmade business. I read countless online articles, which I share in my weekly newsletter (sign up here) and of course books + magazines. Here are a few that I'm currently reading (because I can't just read one at a time >_<):
Mollie Makes Social Media Issue
The Handmade Entrepreneur
EtsyUSA, it's an ebook that was only a few dollars. I haven't had a chance to read through it yet, but I've been soaking up any knowledge about Etsy since switching over to the platform (permanently).
The Right Brain Business Plan
What business books have you read and taken away useful information? I've read so many! I need to take some time to review the ones I've finished.