I got this book for the half-semester course I took on C when I was in college. I wouldn't use it to learn C, since as the name says, it's a reference manual. The great thing about this book is it guided the reader about portability issues. It had a complete standard library reference, and it laid out the precedence of all operators in an easy to follow chart. I used it for several years after I got my degree, out in the work world. Very handy. If the newest edition is anything like this one was, I'd highly recommend it to anyone who has to work with C regularly.