Do you know how to read your meters?
http://therecordingrevolution.com/2013/11/25/do-you-know-how-to-read-your-meters/
Recording Ambience In Surround
http://randycoppinger.com/2013/10/22/recording-ambience-in-surround/
Why (almost) everything you thought you knew about bit depth is probably wrong
http://www.sonicscoop.com/2013/08/29/why-almost-everything-you-thought-you-knew-about-bit-depth-is-probably-wrong/
If you can't hear it, it doesn't matter, right? Wrong
http://productionadvice.co.uk/if-you-cant-hear-it-it-doesnt-matter/
A Lesson on Setting Levels
http://www.homestudiocorner.com/a-lesson-on-setting-levels/
The rest articles: http://theproaudiofiles.com/best-of-2013/
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Best
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