^ Gutbucket sums it up very well. By using the search tool, you should be able to find several threads I recall from the past few years regarding different members' opinions as to whether it is 'good' to post-process or not, how much if so, and what tools/approaches may be more or less appropriate.
Personally, I use Digital Performer for editing (multitrack DAW software for the Mac platform), and I typically apply some post-production to all of my recordings, most of which are from 4 track raw sources. I think most here would agree that minimal post-prod. on 2 track stereo sources is preferred (peak normalize, fade in/out, and splitting tracks).
Gutbucket's warning to be mindful of the 'fixes' you'll be tempted to make, and how they may or may not translate on other playback systems, is an important point. Also, the more you get into it and learn both how to use the tools you choose (editing software, etc.) as well as developing your ears for fine tuning, the more your skill will improve.