First, a complete website on judo groundwork is this
http://www.meutatame.com.br/judo.htm
There are most of the technique used in judo. Lock, Choke, guard pass, pin and all the defence from each move.
Kansetsu waza = lock
http://www.meutatame.com.br/chaves.htm
defence
http://www.meutatame.com.br/saidas_de_chaves.htm
Shime waza = choke
http://www.meutatame.com.br/estrangulamento.htm
defence
http://www.meutatame.com.br/saidas_de_estrangulamentos.htm
Osaekomi waza = pin
http://www.meutatame.com.br/imobilizacoes.htm
defence
http://www.meutatame.com.br/saida_de_imobilizacoes.htm
Also a good book is Vital Judo of Isao Okano
In Judo there are many technique, Each technique can be used from different position, for examples:
Nami = standard
Yoko = side
Gyaku = reverse and so on
This are some Judo Technique with each brazilian name
Kagato Jime - gogoplata
Sode Guruma jime - ezequiel choke
Nami/Kata/Gyaku/Okuri eri jime - Collar Choke
Hadaka jime - Rear naked choke
Sankaku jime - Triangle
Jujigatame - Armbar
Waki gatame - Armlock
Ude gatame - Arm lock
Hiza Gatame - Armlok made with leg
Ude garame - Americana
Gyaku Ude Garame - Kimura
Sankaku Garame - Omoplata
Ashi Garami - Hip/leg Lock
I 've seen in kosen judo video also the spider guard (to the bicep compression) , De la riva guard, butterfly guard and these Technique exist in judo, but aren't ofter trained. For Judo rules spider guard don't work well, cause there isn't so much time to used in competition.
Also pass the guard is not trained much, just because 90% of time after a throw u are in side mount or mount so it's studied to get a lock a pin or a choke from that position and how to get out from that positions.