Comment by BalinKing

Sandi Metz's blog (and book) are an absolute gold mine. I'm a junior developer (<5 years), and the material gave me an entirely new outlook on design (object-oriented and otherwise)... and also showed me how un-maintainably most development is done nowadays :(

If there was a required reading list for professional developers, I would put her work on with zero hesitation, I feel it to be that important.