*   When the month of Ramadan arrives, then whoever fasting is obligatory upon must learn necessary rulings regarding it.

*   Whomever zakat is obligatory upon must learn all necessary rulings regarding this also. 

*   The same applies for ḥajj when this becomes compulsory upon someone.

*   Anyone desiring to marry must be aware of the rulings surrounding marriage.

*   A businessman must learn about the rulings of trade.

*   An employer and employee must learn about rules pertaining to the employment contract. 

In short, it is a critically important obligation upon every sane, Islamically mature Muslim man and woman to learn about Islamic rulings in accordance with their situation.

Likewise:

*   It is a must for every Muslim to learn about that which is halal and haram.

*   One must also learn about compulsory rulings related to the inward self, such as humility, sincerity and reliance upon Allah.

*   Every Muslim must also learn about spiritual diseases, like arrogance, showing off, jealousy, thinking ill of others and hatred. They must also learn how to treat and rid themselves of these. 

*   Learning about things which can bring about one’s ruin is also obligatory, such as breaking promises, lying, backbiting, taletelling, accusations, looking at haram, fraud and hurting