How should I start my players in a ROTO league and what should the max # of innings be?

This is my first time in a roto league and i am not sure how i should start my players. should i play them everyday to keep up with the # of games or should i bench them from time to time so i dont waste all my games. and also, i am in a league where teams have about 8 starting pitchers and 3 relievers and im not sure what the max # of innings i should put. if someone can answer these questions, i would greatly appreciate it.