I currently have a redundant machine running a version of Mitel SME Server V5 which I've never used before. In fact I have no previous experience with any flavour of unix but would like to get some.
What distribution of unix should I use? What newbie mistakes am I bound to make?
How should I integrate the new machine into our existing windows (W2K8) network?
Which is easier to maintain SVN or GIT? Are than any default settings that need changing to make them run better?