Izotope Ozone is a great buy, it does a great job of mastering IMHO and if your a novice the presets are a great starting point.
Seriously, if you don't want the plugin then read the guide, it's a real good read and very easy to follow, in particular the importance of using multi-band processing.
http://www.izotope.com/products/audio/ozone/guides.html
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iMac i5 2.8GHz, Macbook Pro 2.4GHz, Pro Tools 10/11, MOTU 828mk2, Presonus Digimax FS, Presonus Firestudio Project, TC Konnekt 24D
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