How often do you get to have two of the giants of mathematics Graham and Knuth co-author (with Patashnik) a book like this - even suitable for high-school students?<br><br>Don't let the binding or whatever fools you, this is a serious math book and serious thinking is required.  The material is broad and interesting.  I think the book can be used as a supplement text to any of the discrete math/algorithm course (or just leisure reading).  It will serve you years to come.  Extra bonus - the marginal notes.  It may be annoying to you or not but I found it funny at times.<br><br>I echo the same feeling as some of the readers here - keep this one always within reach.  This is a future classic!