Questions atheists usually ask about Allah might vary but, they're predictable. Consider these: 1. Is there evidence God Exists? 2. How can we prove there is a God? 3. Where is God? 4. What is the origin of God? Where did He come from? and more.
Author: Yusuf Estes
A proof that the Qur'an is from God and that Muhammad is a Messenger of God.
Author: The Memphis Dawah Team
Publisher: Memphis Dawah
Source: http://www.islamhouse.com/p/1283
The treatise by Imam ibn Hanbal, the Imam of the Hanbali school of juristic reasoning, renowned for his steep knowledge, was written several hundred years ago to the inhabitants of a town where the Imam stayed for a period of time. It contains a full and clear description of the prayer and includes detailed observations of the mistakes, which Imam Ahmad observed during his time in that town. It was and remains an invaluable work for all Muslims. Detailing as it does many common errors made during prayers, some of which are serious enough to invalidate the act of worship.
Author: Imam Ahmed ibn Hanbal
Reveiwers: Muhammad AbdulRaoof
The permissible and prohibited types of waseelah
Author: Naasir Bin Abdulkarim al-Aql
Publisher: Daar Al-Watan
Source: http://www.islamhouse.com/p/1297
A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243
This is a small booklet which has Islamic teachings for the Muslim Ummah.
Author: Abdul Aziz bin Abdullah bin Baz
Reveiwers: Dr. Saleh As-Saleh - Muhammad AbdulRaoof
Publisher: Cooperative Office for Propagation, Guidance, and Warning of Expatriates in the city of Naseem - A website Islamic Library www.islamicbook.ws