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 nice article discusses a very nice topic. It discusses the meaning of Allah's name: An-Nur (the Light). No doubt lots of Muslims did not read about its meaning due to its being obvious but we should take much care of knowing any aspect of Islam even if we think it is very clear. Dr. Saleh As-Saleh explains its meaning through explaining the verse in which it is mentioned in Surat An-Nur.
Author: Dr. Saleh As-Saleh
Publisher: http://understand-islam.net - Understand Islam Website
The Islamic knowledge is the legacy of a prophet, the scholars are heirs of the prophets, and this is why the Knowledge seekers were among the best people.
Author: Muhammad Saeed Raslan
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
50 Questions And Answers On Islamic Monotheism which talks about Who is your Rub? What is your religion?, Where is Allah?, Who are the friends of Allah? and etc.
Author: Muhammad Bin Abdul Wahhab
Reveiwers: Muhammad AbdulRaoof
Publisher: A Dawah website Wathakker www.wathakker.net
This book is one of the most important Islamic books which gives right answers about Christianity.
Author: Sheikh-ul-Islam ibn Taymiyyah