My book is available on Amazon for purchase or contact me directly if you have any trouble finding it
Important Google Links
https://schema.org/docs/schemas.html
https://www.google.com/webmasters/markup-helper/u/0/
https://www.google.com/webmasters/markup-tester/u/0/
testing tool for structured data.
https://search.google.com/structured-data/testing-tool/u/0/
https://www.youtube.com/watch?v=MhVMQEvjwoM - good video explaining it.
Tag manager course
https://analytics.google.com/analytics/academy/course/5