The Systematic Mixing Guide

The Systematic Mixing Guide is written by Ermin Hamidovic (aka "Ermz"), an Audio Engineer and Producer who runs Systematic Productions.

From the website: "The Systematic Mixing guide is the e-Book to kick start your journey toward absolute mix professionalism within the pop, rock & metal genres. Practical and direct information, conveying professional techniques, is guaranteed to give you the sort of mixing insight that would traditionaly take years to develop as a studio intern. These are the same techniques that have taken the author from being an industry newcomer, to one of the most highly sought after independent mix engineers in the country & abroad."

I have found this guide to be very helpful, it is an easy to read, simple, and detailed enough explanation of the mixing process which will present a bunch of tips and advice to improve your mixes. What I like the most is its focus on the genres I usually work with, and also the section about mixing bass. This section was definitely an "eye opener" for me. I highly recommend it to anyone looking for a practical and objective way to learn more about mixing overall.