small server

I want to set up a server for a small business. There is about 6 of us, I wanted to set up the server to share internet in the office, allow for file sharing and printer sharing – the usual. There is also a lot of off site work and we will be wanting to access files and applications from offsite – I have heard of a program call citrix for this. Pretty much I don’t have mush of any experience settign this stuff up, but It’s good experience and I am willing to learn and research. I am looking for any good sites on how to set stuff up, as well as some good programs that I can look up and see what we need. If your not sure to mention something, just go off the basis that I can know nothing about servers.

All help is appreciated
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