Do you miss something on BrainKing.com and would you like to see it here? Post your request into this board! If there is a more specific board for the request, (i.e. game rule changes etc) then it should be posted and discussed on that specific board.
Blackadder Mr K:
http://playgo.to/interactive/
When I learned to play Go, this interactive tutorial was very useful for learning the rules and first basics.