SPOILERS

When you do the part of the Main Quest called 'Path of the Dawn', you will find 4 books. One of those books will tell you where to find them. Finding them is part of the next Main Quest mission.

In the mean time, Mythic Dawn agents will continue to attack you.

The name of the place where they are is called 'Lake Arrius', but I would not go there before you get the quest to do so.

In fact if I remember right, it won't be marked on your map until then, unless you came across it exploring.

Good luck.

I believe this one is like a couple of other places that you find before you 'need' them. The door is sealed by magicka and the lock can't be picked. When you get to the quest involving the place, then the Magicka Seal will be removed. I have come across 2 doors with that messege, but I can't remember which ones they were. ;o)

it'd be nice on the 360 if they would make a download that would add quest lines where you could join the opposites of each guild. like you could join the mythic dawn, necromancers, blackwood company, imperial watch, etc.

Blades-Mythic Dawn

Mage's Guild-Necromancers

Fighter's Guild-Blackwood Company

Thieves Guild-Imperial Watch

Dark Brotherhood-Cyrodiil City Guard

Just so you all can know.

************SPOILERS AHEAD***************

You do actually join the Blackwood Company for a bit. It is in your list of factions along with your rank in the Company. You will always have the beginner's rank though. However, when you finish up the quest, the faction and rank will be gone from your list of factions.

This is also true for the Mythic Dawn. When you go to their HQ and give up your goods and put on their robes, you will have them listed in your factions along with your rank as well. If you choose to fight your way through the HQ from the beginning, then you won't have them listed as a faction. If you DO go along with them to start with and have them listed, they will be removed from the list when you 'betray' them.

Those are the only two that I know of that this happens with. Annnnnd, just so everyone knows, this has been tried and proven by myself. This is NOT just something that I read on another website or anything like that. ;o)

can you just walk out without betraying mythic dawn and be able to walk around and talk to the other members and also not get attacked by them in other locations?

Hmmmm, I've never tried leaving after giving up my goods before. That's an experiment for another day. ;o)

I mean there isn't much to lose if you go there with nothing right?

)

That's very true. It's got me wondering on whether they will allow you to leave peacefully before all of the action starts. Hmmmmm??? ;o)