What is the religious knowledge required to protect oneself and one's religion from misconceptions, and what are the most important books you advise reading for someone intending to study in America?

A Muslim traveling to non-Muslim countries must ensure their ability to practice their religion and avoid prohibited acts. As for what they should learn, it includes the pillars of faith and the pillars of Islam, along with understanding the meaning of Tawhid (monotheism) and its conditions, and relying on the authentic Quran and Sunnah for understanding beliefs and acts of worship. Regarding those who engage in discussions with non-Muslims, they must possess knowledge and the ability to influence; otherwise, it is better to focus on good manners and inviting to Islam without delving into arguments without knowledge. Useful books include: "The Creed Series" by Dr. Omar Al-Ashqar, "Fiqh As-Sunnah" by Sayyid Sabiq, and "Minhaj Al-Muslim" by Abu Bakr Al-Jazairi.