This is a useful book although it is small. It contains some technical terms for da'wah in English. No doubt all scholars and callers to Islam in English are in much need to something like that to conveys the right message of Islam to all those speak English.
Source: http://www.islamhouse.com/p/318420
Download:
By Shaykhul-Islaam Ibn Taymiyyah. Actions are distinguished, one from the other, with respect to their excellence in the Sight of Allaah in accordance with the condition of the heart, not by their number or form, but rather due to the strength of the caller, his truthfulness, his sincerity and the extent to which he prefer Allaah over himself…
Author: Sheikh-ul-Islam ibn Taymiyyah
Source: http://www.islamhouse.com/p/250901
Download:
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
Download:
A detailed description of the different ways the Prophet (s) advised people.
Author: Muhammad Salih Al-Munajjid
Publisher: Islamic Propagation Office in Rabwah
Source: http://www.islamhouse.com/p/1359
Download:
Fortress of the Muslim, Invocations from the Quran and Sunnah: is a very beautiful booklet consists of many authentic Dua's (supplications) for a Muslim to supplicate on a daily basis and on special occasions.
Author: Saeed Bin Ali Bin Wahf Al-Qahtani
Source: http://www.islamhouse.com/p/39062
Download:
A monumental work discussing the Makkan period of the Prophet's life, and a refutation of Orientalist attacks.
Author: Muhammad Mohar Ali - Mohammed Mahr Ali
Source: http://www.islamhouse.com/p/51772
Download: