This book entitled "Prayer's Conditions, Pillars, and Obligatory acts" by Imam Muhammad ibn 'Abdul-Wahh?b is one of the most beneficial books, especially for the beginners and common people. In fact, Allah has made it of benefit for both the knowledgeable and common people as He has made all his other writings of benefit for people all over the world. This is actually from Allah's favor upon him and upon the people.