.. the Game of Thrones mods on Steam,
The mod is not on Steam. Submods might be.
Just saying.
You have to check "Enable cloud snychronisation" for the Steam programn in its settings
and for CK2 specifically in its properties for them to download.
After that didn't work I downloaded the mod from
http://www.moddb.com/mods/crusader-kings-2-a-game-of-thrones-ck2agot and copied it into the folder.
I put
a copy of the .zip file and the file after using the Unarchiver. When I open the launcher, the Mod tab is empty and the Content thing in the main menu is also empty.
Not sure what you are trying to say with the bolded part.
You have to unzip/unpack the zip file
and move the unzipped mod folder and the A Games of Thrones.mod file into the 'mod' folder.
or in other words (from the manual of version 1.0; Manual is inside the downloaded zip file)
3. Download CK2GOT1.0.zip, unpack it and open the unpacked folder.
4. Copy and paste the "A Game of Thrones" folder and "A Game of Thrones.mod" file to your /Documents/Paradox Interactive/Crusader Kings II/mod/ folder. If this folder does not exist, create it manually.
5. Go back to your /Documents/Paradox Interactive/Crusader Kings II/ folder. Create a new folder here and name it "A Game of Thrones".
Manual installation has folders unzipped, not zipped as with Workshop mods.
Mods go into the 'mod' folder in "Documents" and not inside the one in the game files folder.
But now that tech support moved you into the right forum you should be able to find instructions..
though i already copy and pasted the important part of the manual.
(..edited as i forgot for a while that you use a Mac)..