I don't remember much about it, but something happened and Puck got into a fight with some of the other jocks because of what they said to Kurt. Puck does get beaten up pretty badly but doesn't go to the hospital, but insteads spends the whole day in the choir room sleeping. Santana's in it as well, and she lets him put his head in her lap while he sleeps. Most of the story is like little cut scenes because Puck keeps drifting off and waking up again but the last scene was between Kurt and Puck and Kurt thanks him before kissing him (I think)
The other one is a day that is split up in to each Glee characters point of view. The only parts I remember is Mercedes was in the nurses office with Puck because Puck had gotten in to a fight while helping Kurt out. Each character has their own dedicated chapter about them and I think it's from there point of view. It was also before Blaine, but I'm pretty sure Sam was in it.