diff --git a/README.md b/README.md
index 94e6000..7468ea0 100644
--- a/README.md
+++ b/README.md
@@ -15,10 +15,16 @@ Approach Methodology
 <!-- START doctoc generated TOC please keep comment here to allow auto update -->
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 
+### Books
+
+- Android Hacker's Handbook (esp. hardware hacking chapter)
+- Hacking the Xbox https://www.nostarch.com/xboxfree
+- Car hacker's handbook(GPL 3.0) http://opengarages.org/handbook/
+
 
   #### INTRODUCTION
   
-    - [Introduction to IOT] https://en.wikipedia.org/wiki/Internet_of_things
+- [Introduction to IOT] https://en.wikipedia.org/wiki/Internet_of_things
     - [IOT Architecture]https://www.c-sharpcorner.com/UploadFile/f88748/internet-of-things-part-2/
     - [IoT attack surface]#https://www.owasp.org/index.php/IoT_Attack_Surface_Areas
     - [IoT Protocols Overview]#Shttps://www.postscapes.com/internet-of-things-protocols/