I want to learn automation testing in cloud and I do not have knowledge or experience in cloud environment. I searched over the internet and found some blogs, steps, etc but I am not sure whether those are correct or not and which tool, etc (Totally confused).

I am new to this so not sure from where I need to start, I am very much sure from this forum I will get some help (Someone may working on the cloud).

As I have never used this environment, tools before, I would just like to know where I can find good tutorials for beginners?.

Which tool you prefer for me (Functional, Performance and Mobile applications)? (Open source and Paid).