Miaon & Glee,
My boy has only 4 teeth at the moment. I doubt he is trying to reach for his molars. He usually does that when i am feeding him.
Gold Piggy,
I too hope that its a passing phase. So heart pain to see him vomit.
As for ABCs, I haven thought him those but I have been teaching him how to pass me things, and put his toys back, and things like TV, fan, air-con, clock, door, kitchen, hall, room and bathroom. He can now identify those objects and points towards them when I ask him. He even shows me how he sleeps.