This person becomes known as Rav Yisroel Ba'al Shem Tov . He teaches that G-d is everywhere, that He is approachable, and that He is concerned with even the most trivial matters. Your personal and mundane world are important to G-d. It is OK to ask G-d to heal your cow. While scholarship is important, is not the only focus in Judaism.
Prayer requires preparation and devotion.
Through his teachings, prayer becomes the central event of the day for many people. One must maintain an optimistic frame of mind. Joy and song are encouraged. He emphasizes the concept of a Rebbe , a spiritual leader of high caliber, a mentor. He maintains that the masses can achieve greatness through their association with a Rebbe.