The Importance of the issue of ijtihad, who has the right to make it, and caution of speaking about the religion without knowledge
Author: Salman Bin Fahad al-Awdah
Publisher: http://www.islamtoday.net - Islam Today Website
Source: http://www.islamhouse.com/p/1403
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
This book follow the Adadith (prophet sayings) in an attempt to trace their miraculous nature from a scientific perspective so as to pave the Sunnah's way into the hearts of Muslims and non-Muslims as well.
Author: Zaqlol El-Naggar
Publisher: Al-Falah Foundation, Translation, Publication and Distribution
A research paper discussing issues of Hajj & Umrah particular to women.
Author: Muhammad Bin Shakir al-Sharif
Publisher: http://www.islamweb.net - Islam Web Website
Source: http://www.islamhouse.com/p/1271
Issues that the caller to Allah must obtain
Author: Muhammad ibn Saleh al-Othaimeen
A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243