Kitab At Tauhud by Sheikh Abdul Wahab.
With so much being said against Sheikh Abdul Wahab and the outcries of "Wahibissm" this book is a must have for every Muslim who wises to know the truth and remove him self from hear-say, false propagande and baseless stories. The book starts with introduction to the Life of Sheikh Abdul Wahab and his works. This book explains the concept of tauhid from QUranic Verses and Hadiths, goes on to explain the importance and beauty of tauhid. It then deals with incorrect practices of the muslims of this age lik wearing rings, amulets for protection, making duas at graves. Explains why these pratices are bidah and a shirk as they attack the basic concepts of Tauhid. All this is done using Quranic verses and Hadith with important isses sumarized at the end. This book is highly beneficial to correct the aqida and to inform us deeply about the greatest of sin "shirk" so we can avoid it and do not commit any small acts which lead to shirk and hell eventually.
Available from: http://www.simplyislam.com/iteminfo.asp?item=1368