/optcg/

>Actually useful fanblog
http://op-tc-eng-version.blogspot.com.au/

>Official website which I'm going to list, but it still doesn't do anything
http://www.bandaigames.channel.or.jp/list/one_main/tc/en/

>Official strategy guide which sucks ass and is inferior to the fanblog in almost everyway
http://onepiece-treasurecruise.com/en/