Familiar with cloud computing (Azure, AWS, GCE)?

Question

Cloud computing

Good day, gentlemen. In general, I am engaged in system administration of servers. I do not dare to call myself a specialist, still in the process of growth. I decided to move to a new level, to get acquainted with serious, complex, cloud, so to speak, enterprise solutions. I have never worked with the above platforms, I want to study, understand and then switch to using them as a basis in future projects. I am not familiar with absolutely anything, neither with their logic, nor with politics, nor with pricing. That is, I don’t understand how the hourly payment works, taking into account certain features (a disabled instance), how the reservation of resources and their payment, taking into account temporary loads, work. I am also interested in how the system for creating storage, disks, and their interaction works. In general, I am interested in what opportunities are offered, how they can be used, and how they are usually used (best practices). So far, I only understand / suspect that everything is about the same for such platforms, the difference is only in names, prices, shell and some features in the form of technologies provided. At the moment I chose Microsoft Azure. Decided to start with him.
I ask you for recommendations on the material for studying from scratch to an understanding administrator of these platforms. Books, video courses, articles covering all issues. In English and Russian. Where to begin? What to push back from? I'm not going into the official documentation yet, first I want to get a general idea. Thank you in advance!

Answer 1

Without a test lab, it's a waste of time.
You can get acquainted at a basic level on any of these platforms. There are free trial periods and documentation in the same place.

Answer 2

I have used AWS, and Google's GCE my self and I have pretty impressed by their service. I just faced only one glinch in using them and that was it's management. I really had hard times in managing them and it costs me a lot. I think they should work in that direction so even the freelancers, and small stratups will go for it.
However, I can't say any word about Microsoft Azure. I have heard a lot of good things about it but never had an experience of trying it.