It looks like the link to “our basic theme guideline” in Create and Install a Basic, Empty Theme :: Concrete CMS is broken as it (Working with Themes) currently takes you to the root of “Working with Themes”. Should the intended destination be Converting an HTML Template to a Concrete5 Theme instead seeing the URL similarity?
Thanks @wtflm! I have gone ahead and updated that link, and passed along some badges and karma points to you for helping out - it’s appreciated!