Thank you all for the kind words

First, let me assure that you can finish the game without ever visiting Warden's Keep. I've now confirmed that this quest is actually max. 2 hours long. (some say 45-90 min. long actually)
It sounds like you get a keep while you've done. You don't. The merchants you get + the storage chests ate out in the snow in front of the Keep.
[Warden's Keep is not necessary to finish the game].
Look please instead at the Bioware forums, both in the regular and in the Social Site forums. There are ways to add storage chests to your camp or to extend your inventory. As always, please do a bakup of your saved games before actually doing anything.
EDIT:
If you turn down the guy at camp (who is installed on your computer no matter what you do), thus refusing to do his quest, rumour has it that you will be seeing him again in camp where he just stands and stands. Personally, I don't like this way of selling stuff - it feels to much like peddling to me.
/Edit
As Looney4Labs explained the RMB=the right mouse button. In DA: Origins you can hold the right mouse button down to tell your guy where to move, drag a box around the party, then hold the right mouse button down to tell where to go.
You can, also, use press down both the left mouse and the right mouse button at the same time, then sort of push or drive the mouse forward to get your character(s) to move.
I think you'll need to leftclick on the little button that's to the right under each character?
Or maybe just click on the character's portrait?
There should be a way to actually invert the mouse use in this game so you use the left mouse button to tell your characters where to go.
MMMO=Massively Multiplayer Online game, as Looney explained, like World of Warcraft or Eve Online or Funcom's The Secret World or Myst Online.
(I think this game was called that?) It just means many people play the same game, talk to each other, decide to fight together, split the loot etc.
For a single player game, you don't log into Bioware's social site or their servers - unless you need to redeem a code for (free) DLC, register your game or download DLC.
If you just want to enjoy the game as is, just put the game disc in your DVD-drive, and away you go - to Ferelden - In Peace Vigilance - In War Victory - In Death Sacrifice -
Sorry, couldn't help myself...
(such it is when you don't have the game)