The author refers to the Quranic verses and Ahadith by interpreting them in a very simple and comprehensible style, and also brings to light the true status of all the unlawful customs and rituals which are commonly practiced in the society and are detrimental to the faith of Tauhid. Tauhid (Oneness of Allah) is the basis of the Islamic religion.
Author: Shah Ismail Shaheed
Publisher: http://www.dar-alsalam.com - Darussalam Publications Website
Fortress of the Muslim, Invocations from the Quran and Sunnah: is a very beautiful booklet consists of many authentic Dua's (supplications) for a Muslim to supplicate on a daily basis and on special occasions.
Author: Saeed Bin Ali Bin Wahf Al-Qahtani
A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243
The book begins with a discussion of the sacred nature of Makkah Al-Mukarramah, the boundaries of the Haram (Sanctuary) and its sanctity. Then it discusses the superiority of Makkah and narrates Ahadith to that effect. Then it mentions the names of Makkah and the significance of these names. This book also speaks of Ibrahim (Abraham) and Isma'il (Ishmael) (peace be upon them) and their connection to Makkah and its sanctity and development.
Take your Belief from the Quran and Sunnah: a booklet containing important questions of religious beliefs, the writer replied it was seeded with evidence from the Quran and Sunnah; to reassure the reader to answer correctly; because the doctrine of unification (Tawheed) is the basis of His Excellency rights in this world and the Hereafter.
Author: Muhammad Jameel Zeeno
Publisher: http://www.saaid.net - Saaid Al Fawaed Website
An excellent book for non-Muslims explaining various aspects of Islam.
Author: Pete Seda
Publisher: Islamic Propagation Office in Rabwah
Source: http://www.islamhouse.com/p/1301