Purpose of Creation - Dr. Bilal Philips

 

http://www.mediafire.com/view/?mbituws6k33c8cs

Kitab at tawheed - Muhammad ibn Abdul Wahhab

http://www.mediafire.com/view/?mcb3uhsn49j63a9

The Man in the Red Underpants - Abdur Raheem Green

Abdur Raheem Green, a british revert to Islam who has around 25 years of Dawah experience, proves the existence and oneness of God through logic and answers to all the questions atheists ask about God. He proves that atheism is illogical; atheists are atheists due to arrogancy and pre-determined choice, not by reasoning.
http://www.mediafire.com/view/?9e3fr76lfybb6f4

99 names of Allah in Islam - Al Ghazali, Yasir Qadhi

There is no greater study in this world than stuyding the names of Allah 'Azza wajal. Ghazali gives detail description of Allah's names.

http://www.mediafire.com/?d7593dsk6e4gcnr

Also watch the following video by Shaiykh Yasir Qadhi, which is very informative on this topic.