[vishnugupta]

Seconded! Also, I'd highly recommend "Introduction to Functional Programming using Haskell" by the same author. This was the book that set me forth on the path of FP during post graduation. Though, professionally, I've been programming in Java for close to a decade now most of the FP principals have held me in good stead.

[edit] Preface says "The present book is a completely rewritten version of the second edition of my Introduction to Functional Programming using Haskel" so my recommendation is moot.