You are learning an entirely different operating system. You're going to have to make some choices and do some research/learn new things. There will be challenges because it's something completely different from what you know.

The entire point of Linux is there isn't just one Linux, having centralized control of an OS is how Mac and Windows ended up so godawful.

As time goes on the UX will continue to improve (through targeted distros) for less sophisticated users, but we're realistically only now at the point where everything in the ecosystem is "good enough" for a large number of people.