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
Faith in the Last Day is to believe that mankind will be resurrected and recompensed for their deeds. It is to believe in everything that has come to us in the Book and the Sunnah concerning the description of that Day.
Author: Muhammad ibn Saleh al-Othaimeen
Reveiwers: Muhammad AbdulRaoof
Publisher: A website Quran and Sunnah : http://www.qsep.com
Ibn Katheer, At-Tabari, As-Syooti and Other Historians. The four Rightly guided Caliphs (Khaliph's) Abu Bakr As-Sideeq, Umar ibn Al-Khattaab, Uthmaan Ibn 'Affaan and Ali Ibn Abi Taalib. The Biography of Umar Ibn Abdel-Azeez who is regarded as one of the Rightly Guided Chaliphs is also included in this book.
Author: Imam Ibn Kathir
Explaining the Fundamentals of Faith: discusses the fundamentals of faith, by outlining and detailing the objectives of the Islamic 'Aqeedah. Numerous references are made to the Qur'an and authentic Ahadith, for establishing the sincere intention and worship to Allaah, liberating the mind and thought from the irrational and chaotic losses, establishing peace of mind and sound thinking, safeguarding the intentions, learning to establish a strong Ummah (community), achieving happiness in this life and the hereafter, and more.
Author: Muhammad ibn Saleh al-Othaimeen
Reveiwers: Jamaal Zarabozo - Ahmad Bolter - Ahmad Bolter
Translators: Abu Salman Diya ud-Deen Eberle
Publisher: Islamic Propagation Office in Rabwah
Rulings concerning different aspects of the Adhaan.
Author: Abdullah Bin Abdur-Rahman AL-Jibreen - Muhammad Bin AbdulRahman Al-Areefi
Publisher: Memphis Dawah
Source: http://www.islamhouse.com/p/1287
A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243