I just graduated college with a math degree and landed a job in the IT field. I am pretty good with computers, but I have never really had the opportunity to deal with them in this kind of scale. My boss keeps talking about VPN, LDAP, Internet Protocol stuff, among other things that are over my head. Does anyone know of some good resources I could check out to start reading up on this stuff. Free stuff on the internet would be ideal, but any help would be much appreciated.