
This section of the BGA web site is addressed mainly to members of the British Go Association, but most of it should be relevant everywhere.
Links:
[1] http://www.britgo.org/gopcres/playit.html
[2] http://www.britgo.org/gopcres/record.html
[3] http://www.britgo.org/gopcres/study.html
[4] http://www.britgo.org/gopcres/program.html
[5] http://www.britgo.org/gopcres/diagram.html
[6] http://www.britgo.org/gopcres/drawprog.html
[7] http://www.britgo.org/gopcres/play.html#server
[8] http://www.britgo.org/gopcres/play.html#gobye
[9] http://www.britgo.org/gopcres/info.html#web
[10] http://www.britgo.org/gopcres/info.html#news
[11] http://www.britgo.org/gopcres/info.html#mail
[12] http://www.britgo.org/gopcres/info.html#downs
[13] http://www.britgo.org/reviews
[14] http://www.britgo.org/gopcres/gopcres1.html
[15] http://gobase.org/games/SGF/SGFandWWW.html
[16] http://www.britgo.org/tech/gmp.html
[17] http://www.britgo.org/tech/ishispec.html
[18] http://www.britgo.org/tech/sgfspec.html
[19] http://www.britgo.org/Scarff/legacy