For the last two weeks, Greg Koukl from Stand To Reason, was a guest on the White Horse Inn. Check it out by following the link. Greg has written a new book on apologetics called "Tactics". His website is full of information which is helpful for discussing Christianity with people.
Humility is always considering others as better than yourself. It means being willing to submit to authority even if that authority is imperfect, incompetent or even inquisitorial. It means being like Christ.