Problem with C++

Hi,
Im in programming 2 at my university. We just started talking about classes. I have a program where i have to read in my prof. file with students names, id's, and grades. and print out the min, max, standard dev., and print the students id, name , and each of there grades. I'm having problems understanding classes, and how to use them(the actual code), if any of u out there, no some place to go that will help me better understand classes or anything I would appriciate it. ty

www.cprogramming.com :) atleast i think that was it.

Thinking in C++. Scroll down to find the free online version of the book.