So fun to hear that you want to learn more Azure :)
There are a lot of ways to get started with Azure.
The first thing i would suggest that you do is to look at this free learning site from Microsoft
Then I would also recommend that you set up a trial subscription for Azure where you can look around for yourself and follow other traninings.
Networkchuck from CBT Nuggets has a great course for Azure Administration.
and then finally, certifications. I would recommend that you take a look at AZ-900 first ( Fundamentals certification )https://docs.microsoft.com/en-us/learn/certifications/exams/az-900
Hope this help, let me know if you need further guidance!