What is the main theme of the first chapter of the Shri Sai Satcharitra?

The first chapter of the Shri Sai Satcharitra is primarily dedicated to "Mangalacharan," or auspicious invocations. The author begins by offering salutations to various deities to ensure the obstacle-free completion of writing the book. As detailed in Chapter 1, this includes prayers to Lord Ganesha, the destroyer of obstacles, and Goddess Saraswati, the goddess of speech and knowledge. The chapter establishes a key theme by identifying Sadguru Sainath with these deities, stating that Sai himself is Ganesha who destroys obstacles and Saraswati who sings his own life story for the salvation of his devotees.