[I'm Fresher] Uncle said I'll refer only when you have production level exp on AWS

So, there is one relative who works in a MNC and that company and its workforce completely rely on AWS, when I asked him for referral he asked me about AWS, and I said I know basic EC2, S3, RDS but theoritcally and I dont have actual experience, so he guidedme to learn and practice on AWS. I texted him sending questions regarding courses, but he is not checking my messagges :(
If you all can guide me, which course to start and how should I move forward to become good at AWS, so pls assist me