The science of hadith is one of the most honourable and important sciences as we know through it the truthfulness of what was narrated to messenger of Allah peace be upon him whether it is authentic or weak.It's importance and honorability are due the honorability and importance of it's target which is the sunnah of the messenger peace be upon him , the second source of the islamic legislation, the words of who doesn't pronounce any word out of prejudice, it is nothing except a revelation revealed. And from the most collective and summarized written texts of this field is The Text Of Nukabat Al Fakar In Mostalah Ahal Al Athar (the top of thinking in the classification of hadith) by the Hafiz Ahmed Ibn Ali Ibn Hajar Al Askalany Al Shafi may the mercy of Allah be upon him.And this is the reading of the text.
Author: Ibn Hajar Al-Asqalani
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.
A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243
A discussion of the 'pillars' of Eemaan and the factors which invalidate ISlam and remove a person from its fold.
Author: Abdul Aziz bin Abdullah bin Baz
Source: http://www.islamhouse.com/p/1227
ًWhat is Islam?: This book explains basic introduction to the fundamental beliefs and practices of the Islamic faith. An attempt has been made to be as concise as possible, but with the hope that the reader will be encouraged to study Islam in more depth.
Author: Jamaal Zarabozo
Publisher: Ministry of Islamic Affairs, Endowments, Da‘wah and Guidance
Prophet Muhammad Presents His Brother Jesus To Mankind (Peace And Blessings Be Upon Them).
Author: Zain Al-Abedeen Al-Rakabe