Yeah that seems to be what my class will be going over (went though the book itself before Calc 2 for Dummies) and by far the hardest thing I had to get my mind around was the concept of volumes (from integrals). I was stumped for about a month (from when I went though the chapter to about a week after I got Calc 2 For Dummies) and the functions they chose always seemed random, sometimes it would be one function inside another, other times it would be multiplied... it drove me insane, I couldnt see the logic and neither Calc 2 for Dummies nor my textbook really got through to me. Ultimately I sat there with all the functions in front of me (defined as some function of x as opposed to what they actually wrote down) and it ultimately dawned on me. It was all areas. If using an area function the change would be inside, if using a perimeter function the change was multiplied.

Anyway, it all ended up seeming easier than I was lead to believe it would be, it's kind of lucky that in highschool they made us do a project that involved something from calculus to explain to the class (this was in pre-calc) and while everyone else chose things I still havent seen (Fractals etc) I chose infinity, which ultimately included limits to as well as series/sequences/sets.