Fun rooms that people should try atleast once: /room shaman2, /room fight, /room *transform, /room *racing, /room baffbot1, /room *801. These are some of my favorites, for anyone who doesn't already know about these rooms, then check them out.
If i am reading the first page correctly....... this should be the apex of the Tutorial process, i'm very happy to have made it this far, just 5 hours ago i would have looked at these codes and went "WTF!?!?!", thank you Kongregate for your easy tutorials and helping out us new people who want to take a hand at game developing.
 "Earn to Die"){kind=icon}
 "Goblinsmashers!"){kind=icon}
 "Continuity"){kind=icon}
 "Ditloid"){kind=icon}
 "Transformice"){kind=icon}
 "The Sandbox"){kind=icon}
 "The Nameless Ball Game"){kind=icon}
 "The Game"){kind=icon}
 "The Space Game: Missions"){kind=icon}
 "Learn to Fly"){kind=icon}
 "Killing aliens"){kind=icon}
 "Last Square Standing"){kind=icon}
 "Alien Conquest"){kind=icon}
 "Shootorial #7"){kind=icon}
 "Heir"){kind=icon}
 "Another Pointless Flash Button Game Derived From Other Pointless Flash Button Games Inspired For No Absolute Reason Featuring a Random Button That Asks You Random Pointless Objects and Challenges You (Yes you.) To Complete This Super Long Game If You Can"){kind=icon}
 "Pocket Warriors"){kind=icon}
 "Dish Hero"){kind=icon}
 "Shootorial #5"){kind=icon}
Glad I'm not the only one who likes 3 the best, and yeah, it gets hard quickly ;).