DynamoDB guide & book

free guide
What is DynamoDB? | DynamoDB, explained.

video:

AWS re:Invent 2019: Data modeling with Amazon DynamoDB (CMY304) - YouTube
second-most viewed session at AWS re:Invent 2019.

podcast interviews:

139: Alex DeBrie - DynamoDB for Relational Database Diehards | Full Stack Radio

DynamoDB with Alex DeBrie - Software Engineering Daily

book:

The DynamoDB Book -- The most comprehensive book on data modeling with Amazon DynamoDB

blog:

Alex DeBrie - Serverless & AWS