No reason to worry. Just read your C book, try to understand the basics (for/while loops, array, functions) , look at the examples, etc. and I'm sure you'll be able to solve this problem ..
Basicly, with this exercise you'll need a series of for loops stepping through the array, and computing the average, highest and lowest scores.
Good luck.
BTW, is Idolater your handle on arstechnica forums?
