Hi guys, I was wondering, where would I go to learn more about working with Windows Server? I know a few very simple things, like doing some stuff in Active Directory, but there's still so much I don't know. What would be a good resource (preferably cheap)?

For example: I had a client ask me about her work computer. She says that her two coworkers get automatically connected to their server's shared directory at login, but she always has to enter her login credentials again when she tries to open the folder. Is that something controlled by the server, or something on her computer? She asked me because they're between IT people, and nobody there knows the answer.

I'd love to get more familiar with this side of things, so any help you can offer would be great. Thanks.