Book excerpt: This book presents recent developments about lignin documented with world renown researchers. The book is divided into 3 parts: a. Lignin Extraction/Characterization b. Lignin Modification c. Lignin Applications Lignin chemistry is still a mysterious area with various lignin types from various plants in the world providing us new opportunities to discover new materials. With the world extensive knowledge on surface chemistry, there are various methods to modify lignin structure. There are also many applications in polymeric resins, polymer composites, fertilizers and enhanced oil recovery. The book covers all the important developments about this highly important material group "Lignin".