Name Link
Online Web client for Go https://www.cosumi.net/en/
Interactive Go tutorial https://online-go.com/learn-to-play-go
Sensei's Library https://senseis.xmp.net/
Multilingual Go Book Project https://www.gobook.eu/
British Go Association https://www.britgo.org/
London Go Centre https://gocentre.londongo.club/
SmartGo Books https://gobooks.com/
Go Rules Wikipedia Page https://en.wikipedia.org/wiki/Rules_of_Go
International Go Federation https://intergofed.org/
American Go Association https://www.usgo.org/