The "Islamic Studies" series of books by the prolific writer and scholar Dr. Bilal Philips are part of a meticulously written series intended to guide young Muslims in a manner that helps them acquire a thorough practical and spiritual foundation. This series have been generally acknowledged as an excellent introduction set to the principles of the Islamic faith, with core sciences discussed and explored, for both the new Muslim as well as the "old" Muslim wishing to brush up on the fundamentals.
Author: Abu Ameenah Bilal Philips
A nice book covering many aspects of wudoo, ghusl, tayammum, and wiping over socks and bandages.
Author: AbdulRahman Bin Abdulkarim Al-Sheha
Source: http://www.islamhouse.com/p/1381
A description of the Prophet's prayer from beginning to end.
Author: Muhammad Naasiruddeen al-Albaanee
Source: http://www.islamhouse.com/p/1273
The best explanatory translation of the Qur'aan by Muhammad Muhsin Khan and Taqi-ud-Deen Hilaali, with verse by verse recitation embedded into the file
Translators: Muhammad Muhsin Khan - Taqi-ud-Deen Hilaali
Publisher: http://www.qurancomplex.org - King Fahd Complex For Printing The Holy Quran Website
Source: http://www.islamhouse.com/p/1241
A Collection Of Wise Sayings (Al-Fawaid): is one of the well-known compilations of Imam Ibn Qayyim Al-Jawziyyah (may Allah have mercy upon him). This book consists of the elevated thoughts that Allah bestows upon some of His servants as He wills. So whenever any of these scattered pearls of wisdom occurred to the Imam, he would immediately record them.
Author: Ibn Qayyim al-Jawziyyah
Publisher: Umm Al-Qura for Translation, Publishing & Distribution
Jesus and Christianity In the Perspective of Islam: This book guides those who misunderstood the teachings of Jesus and Christianity in the Perspective of Islam.
Publisher: Ministry of Islamic Affairs, Endowments, Da‘wah and Guidance