SEO isn't complicated. Local SEO for local markets. Tags, titles, schema, solid content, images and video. Then you grow national, or you stay local and own your market.
What gets complicated is the agency. Many agencies run clients through three to five communication channels, dozens of forms and a stack of software. Yishai calls that overkill.
SEO Career Bootcamp is the opposite: one playbook, ten documents, one roadmap spreadsheet, three tools and two client channels. Do this, and skip the rest.