First of all, low-pass and high-pass everything, even if you don't think it needs it. Obviously the frequency cut-offs will be different for each track, but doing so will keep you from cluttering up your highest frequencies and mudding up your bottom end.
Remember these tips:#1 Mike placement for effect #2 Record at least 75% of your "raw tracks" with no EQ or Compression. #3 Don't try ANY mixing during the same "lay-down sessions." Always come back with FRESH EARS to mix. Remember, other opinions are very important if you want fresh! Sometimes artists get great value by experiementation Example: Without George Martin's influences on The Beatles, what do you think "Abby Road" would have sounded like? Also, this answer depends on so many other things ie, kind of equiptment budget and of course, purpose of production. I hope these little tid-bits are helpful. If not, GET A PRODUCER. Best of luck,(thetravler)