What one who wants to study tawhid (the oneness of Allah) should begin with

Question : The first question: If someone wants to study tawhid (the oneness of Allah), with which books should he begin? This depends on the level of the student: the beginner, the intermediate, and the advanced student.

Answer : It is well known that knowledge has levels, like a ladder that a person climbs step by step. If a person is a beginner and also young in age, he should start with small books, such as this book whose discussion we have concluded, *The Three Fundamental Principles* and *The Four Bases*. It is very beneficial. Then he progresses to the book *Tawhid* regarding actions and conduct, the book *Tawhid* by the author (may Allah have mercy on him). Then he moves on to books on creed and the actions of the heart, such as *Al-‘Aqidah al-Wasitiyyah*, *Sharh al-Tahawiyyah*, and others. This is according to what he knows of his own understanding and ability. And Allah (Glorified and Exalted is He) is the one who grants success.