http://playgo.to/iwtg/en/ http://playgo.to/iwtg/en/ for basic rules, http://www.goproblems.com/ http://www.goproblems.com/ for building skill, https://openstudy

http://playgo.to/iwtg/en/ http://playgo.to/iwtg/en/ for basic rules, http://www.goproblems.com/ http://www.goproblems.com/ for building skill, https://openstudyroom.org/ https://openstudyroom.org/ for learning with others