Undoubtedly, the heart leans towards those who are kind and gentle. It was said a long time ago: "Make your face happy and your words gentle, and you will be more beloved to the people than those who give them a gift". The one calling to the religion of Islam and dealing with other people has the utmost need to gather the people around him, and cause their hearts to lean towards him so that they will listen to him. Adorning himself with kindness and gentleness helps to achieve that goal with the grace of Allah.
The Choice - Islam and Christianity: Two Volumes, By Ahmed Deedat, An excellent book discussing Islam and Christianity in the light of Holy Quran and the Sunnah.
Author: Ahmed Deedat
A proof that the Qur'an is from God and that Muhammad is a Messenger of God.
Author: Abdullah Bin Abdur-Rahman AL-Jibreen
Publisher: Memphis Dawah
Source: http://www.islamhouse.com/p/1285
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
Fatawaa concerning Taraweeh
Author: Abdul Aziz bin Abdullah bin Baz
Source: http://www.islamhouse.com/p/1265
A summarized book that contains the most important matters that a Muslim needs in his life, from Quran, tafsir, fiqh rulings, beliefs, virtues ...etc. And the book is in 2 parts: The first part includes the three last Ajza of the Quran with its tafsir from "Zubdat At-Tafsir" by shaikh Muhammad Al-Ashqar. The second part contains rulings that concern the Muslim, which includes: Rulings of Tajwid - 62 questions in aqeedah - A calm dialogue on Tawhid - Rulings of Islam (Testimony of faith, purification, prayer, zakat, hajj) - Miscellaneous points of benefit - Ruqya - Du'a - Adhkar - 100 acts of virtue - 70 forbidden matters - Illustrated description of wudu and prayer - The journey of eternity.
Author: Group of Scholars
Publisher: http://www.tafseer.info - Tafseer Website