Hi Nehor...
Things members must believe to be in good standing:
Believe in the Godhead.
Believe that the Prophet is only one that has all Priesthood Keys (and believe in Priesthood)
Accept the canon
Actions they must take:
Keep their covenants
I disagree... (smile)
No one has to believe in the "Godhead." And, they can interpret this to mean whatever they wish.
Accepting the canon means absolutly nothing. Seriously... anyone can believe whatever they wish, interpret it as suits their fancy, and delete, add, remove, or dismiss whatever they wish. The canon can be fictional, historical, mythological, or just plain man made and it just doesn't matter one iota.
Keeping their covenants means what exactly?
One certainly does not need to do this, whatever it means, to remain in good standing in the church.
Yes, there are a few rules (pay tithing, wear garments, etc), one must say they adhere to in order to go into the temple but these have nothing to do with covenants (think WoW here). There are plenty of folks in good standing in the church who are not living very honorable lives.
I think the only thing one has to do to be in good standing (aside from being temple "worthy") in the church is say they believe it is the true church.
Actually, even this is not necessary. I know some great folks who are TR holding members who say they think the church MIGHT be true, or they hold the possibility of the church being true, or they see the church as a way some might come to truth, or something along these lines.
:-)
~dancer~