A very useful article shows the pure Islamic belief of monotheism. It briefly mentions that Allah alone is worthy of worship, He is worshipped directly and Allah is not like his creation nor his creation is like him.
Author: Abdur-Rahman Demashqeyyah
Reveiwers: Muhammad AbdulRaoof
Publisher: An Islamic centre of Qatar www.fanar.gov.qa
The Hadith is Proof Itself in Belief & Laws
Author: Muhammad Naasiruddeen al-Albaanee
A wonderful booklet mentions the predictions about the Prophet Muhammed (Peace be upon him) in Psalm, Old Testament and New Testament. It also discusses some other issues.
Publisher: http://www.rasoulallah.net - Website of Rasoulullah (peace be upon him)
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
Rays of Faith. A seminar to enlighten the minds and hearts, as we continue on our journey towards Allah SWT and explore the deeper meanings of the last five of the six articles of Islamic faith: Angels, Divine Books, Messengers, the Day of Judgment and Al-Qadar.
Author: Waleed Basyouni
Reveiwers: Muhammad AbdulRaoof
A comprehensive explanation and commentary of the first 24 hadith of Imam al-Nawawi's classic compilation, Riyadh al-Saliheen.
Author: Abu Zakaria Al-Nawawi