This book discusses Risalah at Tadmouriyyah which is the answer Ibn Taymiyyah provided to the students of the city of Tadmur on the names and attributes of Allah.
A lofty discussion: How does one actually increase or decrease in his Eemaan? How can one safeguard himself from those matters that would weaken his Eemaan?
"Verily, the death from which you flee will surely meet you, then you will be sent back to (Allah), the All-Knower of the unseen and the seen, and He will tell you what you used to do." [Al-Jumu'ah:8]
This book is a start for a student of knowledge who would like to learn the basics of Tawheed and it's categorization in the light of Qur'an and Sunnah.