This book is one of the most important Islamic books which gives right answers about Christianity.
Author: Sheikh-ul-Islam ibn Taymiyyah
A Book discussingthe importance of khushoo in prayer and how to achieve it
Author: Imran Hussein
Source: http://www.islamhouse.com/p/1401
A Book detailing the rulings concerning Hajj and Umrah.
Author: Mahmoud Reda Morad Abu Romaisah
Publisher: Islamic Propagation Office in Rabwah
Source: http://www.islamhouse.com/p/1391
Due to the pitiful state which the Ummah of Muhammad (may God praise him) is in, due to the lack of knowledge of Muslims about their religion, and due to the high regard which some Muslims hold for Western thought and culture, we see that a hideous practice which contradicts the very principles of chastity and honor in Islam has crept into many Muslim societies. Many people don't realize the origins and consequences of this shameful celebration, but rather blindly follow its rites and customs to be "closer" to the West, not thinking of the sin and displeasure they are earning from Allah.This Book study the ruling concerning this celebration and statements of scholars in this regard.
Author: Muhammad Salih Al-Munajjid
Publisher: Islamic Propagation Office in Rabwah
Source: http://www.islamhouse.com/p/1353
This is a lecture that Shaikh Al-Albani gave in the city of Doha, the capital of Qatar, during the blessed month of Ramadan of 1392H. Then requesters asked the shaikh to print it due to the important benefits contained within it, and to the Muslim's need for something like it.
Author: Muhammad Naasiruddeen al-Albaanee
Translators: Abu Maryam Ismaeel Alarcon
A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243