Unfortunately the Guides and Books links aren't much use. Instead, have a look at the "small talks" series on his blog http://blog.redline.st/category/series/
Yeah we haven't really done anything with guides and links yet ( more pressing, mundane details ). I'd just skip them entirely and read what James has so far in the Small talks series.
We also did a presentation at Smalltalk Solutions a couple months ago.. http://vimeo.com/22084832 which has some good background info from a 'what are they trying to accomplish angle'. Its geared very much towards a smalltalk audience but others can get stuff out of it.
There is also the mailing list where we'd be happy to answer any questions.
Yeah - guides and books coming when the core Smalltalk compiler is complete - from source to bytecodes.
The compiler grammar was just streamlined in the branch and will make trunk in next couple of days.
There was a minor issue with backtracking which caused a big delay in parsing and now with the new grammar there is no backtracking at all. - Tight and Fast.
Rgs, James.