So there are many printings of rules and there are books that sound like the end all for rules but some of them are considered superseded. Even the attached site allows one to purchase such books. This isn't necessarily bad as it gives one choices.
However if someone wants to just get the most up to date and still "valid" rules, where would such a concise list be found, or could this post be used for such a list? I ask as even a search didn't succeed in getting me this info, and I was told that one of my recent purchases (done elsewhere) wasn't quite what I was hoping for in terms of being up to date. ;D