I would suggest to start and make yourself confident with the Azure Portal and maybe also a bit with the Azure CLI.
You should also take a look in the MS Learn Portal, there are good Courses that will bring you forward step by step. Maybe also prepare yourself for the Azure Fundamentals (AZ-900) to have a first goal and a good Overview of what is possible and where to head next and what is what you want to know more about.
AI, Big Data, Data Science, Administration and Operation or Development.
Kind Regards and good Luck, Peter