I am new to linux and I use fedora .
What kind of book or website can I read ?
This is probably a good place to start. Also a lot of times I find that just Googling something will bring up some relevant information. But not always…
It depends on your needs. Do you need to become a certified system administrator? Do you need to code in some programming language? If you only need to use the PC for browsing the Internet, sending email, edit some document, then you don’t need any book, you just learn by doing and when you get stuck on something, just make a search. Traditionally there are two main sources of information, documentation (from whoever publishes the software, from distributions like Debian or Arch, Fedora not so much IMO) and public places like forums and alike. You just ask “how can I do this?” and somebody will tell.