While he’s got a vested interest in assuring you that mastering at home is a good idea, Dave Moulton’s Tips ‘n’ Tricks for Mastering article is still a great resource for those learning the craft.
I’ve taken you through this brief review because I believe it is essential to get and keep in your head these basic relationships when you are preparing a recording for public release. You need to keep in mind all of the digital, analog and acoustic issues and their interactions as you work. Otherwise, your success will be restricted to what dumb luck will give you.
The advice is solid, and not at all specific to the iZotope products that Dave pimps.