This is your chance to learn advanced SEO tactics for e-commerce by the absolute master: Andy Crestodina. This episode contains a guide to outranking your competitors by optimizing your content for search, what you must consider to create great content that will outrank your competitors, and last by definitely not least: find out how to rank for several keywords - also known as semantic SEO.
Article you might find helpful:
What to Blog About: 17 Fresh Sources For Blog Topics: https://www.orbitmedia.com/blog/what-to-blog-about/
Andys tools:
Ahrefs: https://ahrefs.com/
SEMrush: https://www.semrush.com/
Moz Open Site Explorer: https://moz.com/researchtools/ose/
MozBar: https://moz.com/products/pro/seo-toolbar