Glories of Lord Balarama, Intro.
Krishna, the Supreme Person, expands Himself into many other forms of God in order to enjoy transcendental pastimes and to create and oversee the material world. Balarama is Krishna's first expansion, who often appears as Krishna's brother. Through Balarama come countless other avatars, forms of God.
Here, Harinama Dasi narrates "The Glories of Lord Balarama"— the Introduction to Chaitanya Charitamrita, Adi Lila, Chapter 5. Click on that link to read along. You'll be glad you did.