Some other English-language Go sites are listed here .
UK Go Challenge  for schools
Neil Moffatt's Learn Go  site
Steve Bailey 's Go pages
Mick Reiss 's Computer Go site
Harry Fearnley 's Go siteIncludes his bestiary of remarkable positions .
Tim Hunt 's "Milton Keynes Go board"
Peter Wendes 's Go teaching site
Tony Atkins ' Go teaching site
Matthew Macfadyen 's Go tutorials
Henry Segerman 's three-dimensional diamond-lattice Go boards
Thomas Wolf's GoTools Tsume Go program .
GoTools Online 
A web interface to Thomas Wolf's GoTools. It solves simple problems in seconds.
Colin Adams ' pagesMore here about Shogi, in its various forms, than about Go.