Product Manager by Day, Indiehacker by Night
Extremely valuable guide on content marketing and blogging. Quite focused on how to use ahrefs.com as a tool, but nevertheless teaches you a lot about the important concepts.
Great, exhaustive article breaking down search engine optimization in all fundamental parts. Illustrations make things easy to comprehend!
Invaluable resource for product managers.
Great and concise course for people with some software development experience already. Gets you up to speed with the full Spring Boot and React stack really quickly.