Ibn Taymiyyah said: "This (enjoining good and forbidding evil) is a duty that the entire Ummah is obliged to fulfil. It is what the Ulama know as an obligation of collective responsibility, if a group in society undertook to discharge it, the other members of this society are absolved from it. The entire Ummah is commissioned to undertake it, but if a group therein was responsible for discharging it, the rest of society is no longer obliged to undertake it."
Author: Sheikh-ul-Islam ibn Taymiyyah
Reveiwers: Muhammad AbdulRaoof
Translators: Salim Abdullah Marjan
Kitab At-Tawheed is one of the best books on the subject of Tawheed (Islamic Monotheism) and ranks high in authenticity. Till date it has gone through various publications; and had been the means for guidance of the millions of people throughout the world; by taking them out of the darkness of polytheism and error.
Author: Muhammad Bin Abdul Wahhab
Publisher: http://www.islambasics.com - Islam Basics Website
Fatawaa concerning Taraweeh
Author: Abdul Aziz bin Abdullah bin Baz
Source: http://www.islamhouse.com/p/1265
This book centers around four foundation rules that help explain the meaning of shirk and clarify the many misconceptions that surround the subject.
Author: Muhammad Bin Abdul Wahhab
Reveiwers: Muhammad AbdulRaoof
Translators: Shuwana Abdul-Azeez
Publisher: A website Quran and Sunnah : http://www.qsep.com
Plots of the kuffaar and the Muslim response.
Author: Abdul Aziz bin Abdullah bin Baz
Publisher: http://www.islammessage.com - Islam Message House Website
Source: http://www.islamhouse.com/p/1259
One of the most detailed books describing the rulings of Hajj, Umrah, and visiting the Masjid of the Prophet (peace be upon him).
Author: Sayid Sabiq
Source: http://www.islamhouse.com/p/1395