One of the works on this subject is his “al‐Fatwaa al‐Hamawiyyah” which he wrote as an answer to a question presented to him. In it, he was asked what the scholars and Imaams of the religion say concerning the Aayaat and the Ahaadeeth of the Si/aat, or the attributes and characteristics of Allah.
Author: Sheikh-ul-Islam ibn Taymiyyah
This treatise was prepared by the Agency of Islamic Enlightenment in Hajj. Includes a discussion about those things which nullify a person's Islam as well as common errors made by the commonfolk.
Author: Muhammad ibn Saleh al-Othaimeen
Source: http://www.islamhouse.com/p/1377
This book describes and talks about the aspects of life of the Prophet Muhammad (peace be upon him), and shows his great qualities and the attractive aspects of his true religion which has the right to be followed by all mankind.
This book is published on the shoulders of those people who have volunteered their personal stories of how they entered Islam. If you, the reader, are open to the possibility that Allah, the Creator, has given you clear evidence to accept Him and His message of Islam, then read these stories. From different backgrounds, and different experiences, you just might find someone here who had the same questions and doubts that you may have. Many of these people have endured against tremendous obstacles, including parental opposition, despair with other religions, being blind, and being lied to about the true nature of Islam.
Ibn Rajab al-Hanbali This is a treatise we have written concerning humility (Khushu') and the hearts meekness and breaking (inkisar) before the Lord. The basic meaning of Khushu', is the softness of the heart, its being gentle, still, submissive, broken, and yearning. When the heart is humble, so too is the hearing, seeing, heard, and face; indeed all the limbs and their actions are humbled, even speech. The source of the Khushu, that takes place in the heart is the gnosis of Allah's greatness, magnificence, and perfection.
Author: Ibn Rajab Al-Hanbali
The Muslim Creed - 'Commentary on the Creed of Aqeedah At-Tahaawiyyah.
Author: Abu Jafar at-Tahawi