There is a link to the forum in the page header but here it is again.
CCBL Forums - Index page
Such rules as we have are dotted about there. Basically, now everything's done in game there's not really any need for an external rule set. If the game let's you do it then it's allowed. If it doesn't, it's not.
Game settings are; injury and suspensions on (normal), coaches off, salary cap (soft) & luxury tax on, draft signing bonuses on, draft compensation for free agents off, rule 5 draft on, no DH. Players real life stats only affect their ratings at draft and they then pursue their own CCBL career path (which is why Hank Aaron is something of an also-ran while Joe Torre is a play-off legend!)
If there's anything I've forgotten, just ask.