Since AmigaCoding.com has been down for some time and doesn't show any signs of coming back, I have reinstated the Blitz portion of the site on my own wiki. About 90% of the content was available on archive.org so it's almost as it was, though there are a few pages and updates I made that weren't archived so I'll have to recreate them from scratch.
I plan to slowly keep adding to the site whenever I have the time, and there are a few more things to sort out before it's fully up and running (e.g. image uploads), but in the meantime it can be accessed at
http://www.blitzbasic.info