Hi,
I think you have to clear know what your role want to be. There has some training in below url. And you need to know what is your aims for. Maybe you could take a look some free courses e.g. "Databricks Fundamentals", "AI Agent Fundamentals" and "Generative AI Fundamentals" etc. Then follow what is your role aiming for.
https://www.databricks.com/learn/training/home
There has many different roles and go through some free resource. Once you knew what is your aiming for, you could create an free edition account for some practice.
https://community.cloud.databricks.com/