These are three good books for learning Arabic Language for the non-native speakers. But we should pay your attention that they are for who has slightly good knowledge about Arabic and how to pronounce it. We don't claim that you can consider them as an alternative to a teacher but they are good step for who wants to be excellent at Arabic. With these books, there is an Arabic-English glossary confined to the words mentioned in these books, and the author shows in its introduction how to find any word.
50 Questions And Answers On Islamic Monotheism which talks about Who is your Rub? What is your religion?, Where is Allah?, Who are the friends of Allah? and etc.
Author: Muhammad Bin Abdul Wahhab
Reveiwers: Muhammad AbdulRaoof
Publisher: A Dawah website Wathakker www.wathakker.net
Ibn Katheer, At-Tabari, As-Syooti and Other Historians. The four Rightly guided Caliphs (Khaliph's) Abu Bakr As-Sideeq, Umar ibn Al-Khattaab, Uthmaan Ibn 'Affaan and Ali Ibn Abi Taalib. The Biography of Umar Ibn Abdel-Azeez who is regarded as one of the Rightly Guided Chaliphs is also included in this book.
Author: Imam Ibn Kathir
" And indeed, you are of a great moral character." (Quran, 68:4)
Author: Ahmed Deedat
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.
Fatawaa concerning Taraweeh
Author: Abdul Aziz bin Abdullah bin Baz
Source: http://www.islamhouse.com/p/1265