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 detailed account of the life of the Prophet, may god praise him.
Source: http://www.islamhouse.com/p/1245
Its author said in the introduction, "It is a known fact that every language has one or more terms that are used in reference to God and sometimes to lesser deities. This is not the case with Allah. Allah is the personal name of the One true God. Nothing else can be called Allah. The term has no plural or gender. This shows its uniqueness when compared with the word "god," which can be made plural, as in "gods," or made feminine, as in "goddess." It is interesting to notice that Allah is the personal name of God in Aramaic, the language of Jesus and a sister language of Arabic."
The book was compiled by Imam An-Nawawi who was the great scholar of Hadith and Fiqhof his time. Commentaries on the Ahadith have been added by Hafiz Salahuddin Yusuf of Pakistan who had originally executed them for the Urdu edition of this book. The English translation of the book and the - commentaries was performed by Dr. Muhammad Amin and Abu Usamah Al-Arabi bin Razduq who have performed their task with utmost care and profound interest.
Author: Abu Zakaria Al-Nawawi
Eid Etiquette and Rulings
Author: Muhammad Salih Al-Munajjid
Source: http://www.islamhouse.com/p/1233
This book comprehensively explains Tawheed in the words of Shaikh ibn Saleh al-Uthaimeen (rahimahullah) from the book, 'Sharh Hadeeth Jibra'eel'.
Author: Muhammad ibn Saleh al-Othaimeen
Reveiwers: Muhammad AbdulRaoof
Publisher: A website Quran and Sunnah : http://www.qsep.com