Ruan is a knowledgeable, experienced seo and extremely proficient at his craft. His course is full of practical info and gems that alot of other courses simply lack. If you're serious about learning high-level seo and digital marketing i would highly recommend getting his underground course and studying it... everything you need to become a successful, professional seo is in there! I purchased it when it first came out and it has only gotten better over time.
-salomon rodriguez