Linux admin is one of those things which is easy to jump into but takes a long time to get to a point where your skills can be trusted enough to manage an impor

Linux admin is one of those things which is easy to jump into but takes a long time to get to a point where your skills can be trusted enough to manage an important production site. You might go with a managed VPS. For example, Servint is a managed service. I am not recommending them, just using them as an example. To learn, practice using a local Linux box.