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
A discussion of the obligation of keeping a beard and a clarification of some common misconceptions.
Author: Muhammad al-Jibaly
Publisher: Al-Kitaab & as-Sunnah Publishing
Source: http://www.islamhouse.com/p/1231
The Muslim Creed - 'Aqeedatut-Tahaawiyyah.
Author: Abu Jafar at-Tahawi
Translators: Suhaib Hasan AbdulGhaffar
This book is one of the most important Islamic books which gives right answers about Christianity.
Author: Sheikh-ul-Islam ibn Taymiyyah
The author said in its introduction, "Nothing offends more the Christians than to cast doubt about the doctrine of the Trinity, the fountainhead of their faith. Since I grew up as a Christian, I know by heart that it will surely injure a devout follower of Christianity something he knew as true. But to lend a blind eye when I know better is far from righteousness since I am bound by the God's Commandments to guide those mislead by the false doctrine. It is a basic right of every individual to know the truth that will lead him to the right path.
An interesting book contains more than eighty means of da'wah in different fields of our life such as da'wah at home, masjed, school and work in addition to various means of da'wah. These books teach us that we should not confine da'wah to masjed but it should far exceed it to include all life's fields. Based on these means of da'wah, we can direct da'wah to everyone by easy ways. We should know that da'wah is a responsibility of every Muslim, the issue which encourages us to use these means efficiently.