[brightghost]

I'm surprised no-one has mentioned how badly in need of proofing this content is. I just looked through a handful of sections but the ones I saw were littered with missing words, out-of-place headings, and poorly-cropped illustrations. It seems like great content, and the idea of charging for it has merit, but you're not going to be able to do so without proofing the content; it doesn't seem to me that even a cursory scan-through of all the pages has been done.