You can learn from SEO books or read SEO articles on the web. Yahoo is smart, always updated and isn't lenient when contemplating violators. Keywords can be very important if you're want to land the front page just ends up with a SE. https://Www.digitaljournal.com/pr/news/press-advantage/alpha-therapeutics-is-offering-high-quality-cbg-cbd-products-in-scottsdale-az