I have created a free list with good Apache Kafka Developer Resources.

The list will be updated over time.

Documentation

Apache Kafka website: https://kafka.apache.org/

Confluent resources list: https://www.confluent.io/resources

Confluent online talks: https://www.confluent.io/online-talks

Podcast

Streaming Audio: A Confluent podcast about Apache Kafka: https://open.spotify.com/show/65WRDvSFQ2tkdk1GXlRPqR

Video Content

Confluent Youtube Channel: https://www.youtube.com/channel/UCmZz-Gj3caLLzEWBtbYUXaA

Viktor Gamov - Developer Advocate. Livestreams and talks about Apache Kafka: https://www.youtube.com/user/gAmUssA85

Kai Wähner - Enterprise Architect. Great talks about Apache Kafka in different industries and streaming machine learning: https://www.youtube.com/user/megachucky

Robin Moffatt - Developer Advocate. Lots of good in-depth video content with Apache Kafka demos, Kafka Connect, ksqlDB, ElasticSearch & Kibana: https://www.youtube.com/channel/UCWu69ik-sF104TILL8cl46Q