I too come from a Windows background and to regurgitate a much-used phrase, I feel your pain.
In Windows (certainly Vista, the mst recent I tried) you can right-click on a file, pick 'Properties' and view and change the tag info. This is not so easy on a Mac. If you right-click on a file and pick 'get info' this will open up a window which gives you some of the info you could get from Windows' "Properties" but not all, and you can't change much either. Holding option (alt) when you right-click changes 'get info' to 'show inspector', which sometimes shows you more info. Basically for file handing, OSX is pants compared to Windows, even compared to Windows XP. The main advantages of OSX is that it just seems to run smoother with less crashes and some of the apps seem more polished, particularly for music and video.