This document provides an introduction to Deepak Tyagi's beginner to advanced SEO course. It discusses what SEO is and the different types of on-page and off-page SEO techniques. It also defines the three main types of SEO: white hat SEO which follows search engine rules, black hat SEO which uses unethical tactics, and grey hat SEO which uses techniques that are not clearly defined. Contact information is provided to enroll in the course.