@pop_smoke, there's plenty of options here.
Personally, I found studying for an official databricks certification to be a great help. This gets you well-rounded with the latest and greatest features + it's streamlined.
You come from ETL, naturally, that'll lend itself to Data Analysis and Data Engineering. You've built pipelines before as part of doing ETL.
I'd advice that you do the following certifications:
Data Analysis Associate followed by Data Engineering Associate.
https://www.databricks.com/learn/certification/data-analyst-associate
https://www.databricks.com/learn/certification/data-engineer-associate
Can you check if you're work/employer is a Databricks partner? If they are, you can be eligible to access the Partner Academy on there you'll find the follow as a partner benefit:
You can also pay for these as a customer, I believe. These aren't the only route for learning. If you click on the links I've provided above, they should tell you the courses to search for & you'll find that in the exam prep guides. You'll find these courses in the Customer Academy or Partner Academy (depending on what one you fall into).
You can also look into the Databricks Labs. You can either pay per lab or get an annual subscription which gives you access to all of them. What do they provide that the Free Edition does not? A preconfigured environment with all the material and notebooks available for you to learn from. If you're like me, and often strapped for time, they're well worth it. There's loads of labs and it's based on the content you're learning.
If you're on a budget and this is something you're pursuing outside of work and work can't provide funding etc, consider going on Udemy, getting a personal subscription for like £25 a month and get access to all the top courses. You'll be able to follow "non-official" databricks learning content on there. You could find paths for Data Analysis and Data Engineering. You obviously can't guarantee these align "exactly" with the exams, nor will they provide environments/labs, and the content could be outdated. However, they're probably built for things like the "Free Edition" where they'll provide downloadable content for you to upload into your own environment to learn.
That'd be my two cents on the matter. Feel free to ask any questions, happy to help @pop_smoke.
For what it's worth, I've recently passed the Data Analyst certification & written up an article with my steps taken https://community.databricks.com/t5/community-articles/zero-to-hero-data-analysis-certification/m-p/...
All the best,
BS
