The Choice - Islam and Christianity: Two Volumes, By Ahmed Deedat, An excellent book discussing Islam and Christianity in the light of Holy Quran and the Sunnah.
Author: Ahmed Deedat
An summarised text detailing the rules governing the Criticism of Hadeeth. From its introduction -'A hadith (pl. ahadith) is composed of two parts: the matn (text) and the isnad (chain of reporters). A text may seem to be logical and reasonable but it needs an authentic isnad with reliable reporters to be acceptable; 'Abdullah b. al-Mubarak (d. 181 AH) is reported to have said, "The isnad is part of the religion: had it not been for the isnad, whoever wished to would have said whatever he liked." During the lifetime of the Prophet (SAS) and after his death, his Companions (Sahabah) used to refer to him when quoting his sayings. The Successors (Tabi'un) followed suit; some of them used to quote the Prophet (SAS) through the Companions while others would omit the intermediate authority - such a hadith was known as mursal (loose). It was found that the missing link between the Successor and the Prophet (SAS) might be one person, i.e. a Companion, or two persons, the extra person being an older Successor who heard the hadith from the Companion.'
Author: Mahmood Al-Tahaan
The Three Fundamental Principles and the Four Basic Rules of Islam.
Author: Muhammad Bin Abdul Wahhab
Publisher: Daar Al-Watan
Source: http://www.islamhouse.com/p/1333
A Book discussingthe importance of khushoo in prayer and how to achieve it
Author: Imran Hussein
Source: http://www.islamhouse.com/p/1401
This booklet deals with one of the most important topics to which the Muslim should give attention in his life and for which he should have the utmost concern. Included in it is the explanation of a tremendous way of seeking forgiveness, from amongst the various forms of seeking forgiveness that occur in the sunnah of the Prophet.
Author: AbdurRazzaaq AbdulMuhsin Al-Abbaad
ًWhat is Islam?: This book explains basic introduction to the fundamental beliefs and practices of the Islamic faith. An attempt has been made to be as concise as possible, but with the hope that the reader will be encouraged to study Islam in more depth.
Author: Jamaal Zarabozo
Publisher: Ministry of Islamic Affairs, Endowments, Da‘wah and Guidance