Step 1: Open up the pages for the videos in different tabs, you will find you have just completed half the quest. 
Step 2: Play all the videos (yes at once) and mute all but one that you are interested in. 
Step 3: ??????(wait)????? 
Step 4: PROFIT! congratulations! you just won the Remembrance of Cons Past quest with an Additional 1000 points here on comic vine!