"The three essential things a man should know about style are...
Fit, fit and fit. It’s 2014 and we’re still preaching the gospel of fit and proportions. There are no other essentials: just get the ‘fit’ down and stop looking slovenly or like your clothes are painted on!" - Brian Trunzo and his style related interview.
I think this more suitable on Streetwear and Denim instead of Classic Menswear?
Nick Wooster's personal style interview.
What are the rules in the way you dress?
It’s all trial and error. Mostly error.