A comprehensive explanation and commentary of the first 24 hadith of Imam al-Nawawi's classic compilation, Riyadh al-Saliheen.
Author: Abu Zakaria Al-Nawawi
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
The Life, Teachings and Influence of Muhammad ibn Abdul-Wahhaab: This book is not one with a political agenda. It is meant neither to support nor to critique any contemporary regimes or policies. Indeed, the driving force behind this work is much greater and more important than that. It has to do with, first, the religion of Islam as preached by the Prophet (peace and blessings of Allah be upon him) himself and, second, with the honor and rights of an individual Muslim, Muhammad ibn Abdul-Wahhaab.
Author: Jamaal Zarabozo
Publisher: Ministry of Islamic Affairs, Endowments, Da‘wah and Guidance
The Life of Isa (Jesus) -peace be upon him- in Light of Islam: His personality has impacted the three major religions of this world, namely Judaism, Christianity, and Islam. Given the importance of his time on earth, it is critical for mankind to fully understand his pivotal role in shaping history as well as the final days.
Author: Ahmad Musa Jibril
Publisher: http://ahmadjibril.com - Ahmad Jibril Website
Fatawa concerning looking at members of the same and opposite sex.
Author: The Memphis Dawah Team
Publisher: Memphis Dawah
Source: http://www.islamhouse.com/p/1279
This treatise was prepared by the Agency of Islamic Enlightenment in Hajj. Includes a discussion about those things which nullify a person's Islam as well as common errors made by the commonfolk.
Author: Muhammad ibn Saleh al-Othaimeen
Source: http://www.islamhouse.com/p/1377