Posting
Doing anything within your character's power is allowed. However, since the game is built around a "D&D" style, it's preferred if you interact with the objects around you instead. There's no specific rule in the order that you have to post, of course, as long as you don't double post, so that everything you do is a reaction to someone else posting. If you did something wrong, just go back and edit your post before, and let the person you are posting with know that you fucked up.
Battling
In the game, Battling will take place much like any kind of turn-based RPG. However, people who move the fastest will get the opportunity to attack first. In this case, do not post willy-nilly, you will be notified when it is your turn to attack. You may post whatever kind of crap you want in the actual attack itself, as long as you state what kind of attack you are doing, whether it be a regular attack, or one of your abilities. You may also use a "Defend" which will reduce the damage you take from the enemy's attack. Your health and power will be kept a hold of during the battle, and after every battle is finished you can see your remaining health and power in your character sheet. Note that you may not equip items during a battle, only using items that are labeled as an "In-Battle Item".
Death
Death will be treated like it is in other RPGs- for one person to die in a group consisting of more than one person, they will be treated as such until the battle is over, where someone will have to use an item to revive them, or take them to a town or healer to revive them. If all members of the party die in battle, there will be a temporary "GAME OVER", the moment will be saved in history as the most epic of fails, and then you will be taken back in time back to the entrance of the dungeon to continue the journey, as it is custom in a Legend of Zelda game. However, half of everyone's money WILL be taken, so try not to die. Too much.