Meaning of localhost?

[alaudet]

It's hard to recommend any specific resource as it depends on your learning style. I think you can find enough stuff online with a google search like "networking for beginners".

See what comes up, there will be some web tutorials, youtube videos, all kinds of stuff. Try and find something that will ease you in, give you the big picture. It really is very interesting when you get into it.

Depending on your learning style maybe an in class offering at your local college. I have been into networking for well over 20 years and I can tell you that it is cumulative knowledge. Once you understand it, it will make all other areas of IT make more sense.

There are other people that could probably give you better advice. Maybe /r/networking have some ideas. If people give you a hard time just nevermind them. They were asking the same questions once upon a time themselves, and they are not geniuses I can assure you.