How much reputation do you need to be deputy also where is the medicine cat den your supposed to find
Viewing post in Kit to Leader: 8 Year Anniversary comments
I don't know if you can become Deputy, (I went straight from Warrior to Leader in mine), but at least above 80 reputation! *Spoilers*, you want to go and talk to Moonheart in the Herb Gathering area, where she'll tell you about MossKit if you want. From there, get the moss ball from one of the dens, and go to the beach border with Fire'Clan!
The medicine cat den is in the hunting area you're introduced to when you become an apprentice, it's the cave on the right side with the badger in it. Kill that and then go talk to the medicine cat!