My lovely friend Becky has created an awesome worldbuilding resource for fantasy writers. Check it out!
Also, you may have seen this already, but I just found the scanned image of one of J. K. Rowling’s outlines for keeping track of subplots, and I kind of love it. It seems to me like doing this could be a great thing for editing – could really help you make sure each chapter is advancing plot and that the subplots are being advanced at an even rate.
I just found and love love love this post by Maureen Johnson, in which she expresses a view basically identical to mine (if more eloquent) about the “crisis” in “boy books” and boys reading. I had a teacher come into the library yesterday looking for a book to read aloud to her class who said she was especially concerned about getting one that would appeal to the boys. Look, I know that on some level you want to do whatever seems most likely to increase literacy and get kids interested in books. But – well, I can’t say it any better than Johnson does in her post.
And finally, YA Highway is a cool blog about teen books, writing, and various related things by a group of YA authors. Fun stuff.