The Synonym Finder – The best thesaurus available for the English language.
Write Your Novel From the Middle – What if the midpoint of your book is the best place to start? See my review here.
How to Write Science Fiction and Fantasy – Not just for writers in these genres, full of great tips for any writer.
Characters & Viewpoint – An in-depth look at how to create characters and get your readers to care about what happens to them.