I see our friend Keith has already beat me to this but I want to make sure this information is easy to find.  There is a large directory of “step by step” guides for Windows Server 2008.  Out of those I access regularly, I highly recommend the Server Core guide and the Customizing TS Web Access guide.

http://www.microsoft.com/downloads/details.aspx?FamilyID=518d870c-fa3e-4f6a-97f5-acaf31de6dce&DisplayLang=en#filelist

This serves as a nice compliment to the Windows Vista step by step guides that include some overlap, such as managing roaming user data.

http://www.microsoft.com/downloads/details.aspx?familyid=311f4be8-9983-4ab0-9685-f1bfec1e7d62&displaylang=en&tm