Steps to Razing and Living world events
I think the whole Idea is to check the heralds and see whats new. Part of the fun is finding stuff on your own. For instance they ninjad the last two items in for scavenger hunt without telling anyone. I found them before they were even up on dulfy.
A good way to find out what to do is check to see if achievments were added for the new stuff and that will give you an idea :-D That or wait for a guide to pop up.