Mu‘āwiyah ibn Abi Sufyān (may Allah be pleased with him) reported: The Messenger of Allah (may Allah's peace and blessings be upon him) said: "Whoever Allah wills to do good to, He makes him comprehend the religion.
Islamic branches are those important stuff and materials that both tackle all aspects of worldly life and Hearafter in Islam, and need to be covered whatever the level or age of the moslem, as they're what construct the religion and let one closer to Allah and his Deen, so Islamic studies isn't just a material or a subject it's and has been a hand in one's journey..
Try Free Now