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
A description of Death, the Life of the Grave, and the Day of Judgment.
Publisher: Islamic Propagation Office in Rabwah
Source: http://www.islamhouse.com/p/1229
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
God in Christianity... What is His Nature?: The intent of this work is to honestly and sincerely present the truth that was found
Author: Naji Ibrahim al-Arfaj
Islam consists of God’s guidance to humanity. It is not the religion of any particular people. It does not belong to any specific land. All Prophets of God, in all ages, and at all places, preached this very religion.
Publisher: Cooperative Office for Propagation, Guidance, and Warning of Expatriates in the city of Bade'ah - A website Islamic Library www.islamicbook.ws
The Nature Of Fasting: This book will help the reader better understand the fine points about fasting. like; What is the nature of the things that break the fast? What are the rules by which one can know the difference between what breaks the fast and what does not?
Author: Sheikh-ul-Islam ibn Taymiyyah
Publisher: http://www.dar-alsalam.com - Darussalam Publications Website