Biting off more than I can chew

So I am beginning to have some doubts about the text I picked for my Intro to Philsoophy class. It is pretty challenging. One never knows, sometimes students will rise to the challenge, but one can never really know if that is going to happen. We shall see...
I wish I had thought this out a bit more thoroughly before trying it. To be honest I might have been better off using Sober's book or another. That has exercises and the like. But we shall see. I may try switching for the summer, unless this a great success.
It is so difficult finding something that can convey what philosophy is about, without it being too long or too difficult. Sigh.