Is it permissible for a Muslim man to marry a non-Muslim woman, and what are the stages of marriage from engagement to the official marriage, and what is permissible and impermissible in each stage?

It is not permissible for a Muslim to marry a disbeliever unless she is a chaste woman of the People of the Book. Marrying a woman from the People of the Book is disliked due to several considerations. It is preferable to marry a righteous Muslim woman, while taking into account the selection of a life partner, looking at the betrothed, and adhering to the manners and rulings of the wedding.