If I find a bona fide spiritual master, what should I do?

Surrender to him. The Bhagavad-gita advises, "Just try to learn the truth by approaching a spiritual master. Inquire from him submissively and render service unto him. The self-realized soul can impart knowledge unto you because he has seen the truth" (Bg. 4.34). If you find a qualified spiritual master, in whom you have full confidence, you should surrender to him wholeheartedly and render service to him. If you approach the spiritual master with a submissive attitude and ask him sincere questions about spiritual life, he will certainly bless you with enlightenment.