Barbara Bergsten Designs offers free stitch guides for all her canvases on her website. The site also has free charted alphabets, diagrams of the stitches used in her guides, and a project sheet to print out and use for your own notes as you stitch.
UPDATE: Barbara explains a bit about her free guides on her blog.
UPDATE #2: A glimpse at the stitch diagrams and instructions in one of Barbara's guides.
UPDATE #3: Barbara's updated her stitch diagrams and repositioned them to make them easier to find.