diff --git a/README.md b/README.md
index a2fce7d..31050ce 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,9 @@ Hi! Join me on the journey of creating 2d games from scratch in D programming la
 #### Youtube tutorial
 You can follow my youtube tutorial: https://www.youtube.com/playlist?list=PLgM-lc_kSqFQPF0UXgmFZpZalqcrSofe-
 
+#### A great book on D programming language
+ Programming in D by Ali Çehreli: http://ddili.org/ders/d.en/index.html
+
 #### Required software
 - DMD compiler
 - DUB package manager