I've owned TRacks for years and it's a good product. I've also demo'd Ozone 4 for a while and liked many features in it. It offers a few more features for mastering than most other progs. PSP Vintage Warmer is popular also in the mastering chain with many nice presets offered. TRacks offers many preset styles... for a beginner, you can select different presets until you get the sound you want, and you're done, but...
You may want to read about Bob Katz and his K system as part of your learning. He covers what these guys above are talking about. I do a mix of rock and electronic. I use TRacks, BSB, and X2 plugs in X2 to master my current mixes. The mixes aren't usually limited and the RMS is about 18-14 with peaks about -3-6 db. Then I render the mix and use generally the same mastering chain with some tweaks for the album to bring it up to a peak RMS of around 12 with transients limiting at -.3 for my masters. Using the same mastering chain gives the mixes 'some' uniformity.