Use the context around you
Review the platforms used by your current team or the roles you are targeting. Consider access to a safe lab, mentoring, and the kind of workloads you want to support.
Learn concepts alongside services
Networking, identity, compute, storage, monitoring, and cost awareness are useful foundations. Map those concepts to one platform before comparing service names across several.
Practice operating what you deploy
A deployment is only the beginning. Practice logging, alerts, access controls, backups, and rollback in a controlled lab. Document how to stop resources and avoid unexpected charges.