As far as installing fedora is concerned, it is real simple
a) Make sure you have a complete partition free with > 3 GB [or at least 2], no need to format it
b) Put first fedora CD in comp
c) Change BIOS [usuall hold 'del' as comp starts up] to boot from CD
The rest of the procedure is quite straight forward. Fedora takes care of the dual boot situation, and it detects all other operating systems, and configures most of your hardware for you.
Fedora Install WILL need to format the hard disk you saved for it. If you do not have a spare HD, do not try to install. Partitioning a hard drive with data already on it will cause all data to be erased
It is hard to learn UNIX from a book. Install, and jump head first. I suggest you get a book on the topic. The 'codes' will start making sense in time.