SEO is a skill that can only be learned by doing. It is not possible to learn SEO theory online. It is possible to read as much about SEO as you like, but you will not be able to practice it without doing it.
Propelrr, a top SEO company from the Philippines has provided services for clients ranging from corporate and realty to e-commerce, recruitment and many other verticals. We've discovered that each client has their own version of SEO and the purpose it serves. Some clients have learned from outdated SEO books that are no longer relevant, while others were wrongly taught by agencies in the past.