THE ANSWER TO THE PUZZLE IS ON THE DAMN CLAW?!
When I first played Skyrim, I was following through the main story missions, and got to the part where I had to open a door using a Golden Dragon Claw. When I got to the door in the depth of a murky ruined cave, I found an obstacle; a door, with three circles around a lock, which you could rotate. The rings had different pictures on them and I guessed I had to work out what the proper combination was.
I must have spent at least an hour, first just fiddling around, second, scouring the murals on the walls near the door for some kind of hint to the combination, and finally, just fucking hammering those buttons in every single possible combination. When I finally got it, I went on the internet to see if there was some kind of logical explanation for it, and sure enough... the combination is on the back of the claw the whole time. I did not know you could look at items in your inventory in that 3D view and I really didn't know it would somehow be a vital skill to learn for a mandatory bloody story quest.