Hactar Go Links
Here are various links that are likely to be interesting for Hactar users.
Lots of information and reference material is available in Sensei's library. Site has a lot of reference material.
Go related discussion can be found in life in 19x19.
Web broser can be used to play against other players at online-go.com. Playing is quite comfortable with tablet.
Go Game Guru has active go blog, problems and commented games.