Hi,
Not being any sort of an expert on linux I'm not going to go into any details about the error, but the fact it 'failed dependancies' means it requires other applications installed before it can install the *.rpm.
Have a look at linux online site, it gives the basics I think
http://www.linux.org
Also if your serious about usign linux, buying a book is a pretty good idea, I bought 'Linux in a Nutshell' which overviews linux and gives a compreshensive outline of linux commands.
Finally I find the best way to learn linux is just to get into the nuts and bolts of it. Every since I dropped Fedora for Gentoo I've learned heaps on how to customize linux. Fedora tries to do everything for you but Gentoo requires some configuration. But thats just an opinion