Bartosz Milewski is writing a category theory tutorial, which is in progress: http://bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-preface

Bartosz Milewski is writing a category theory tutorial, which is in progress: http://bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-preface/ http://bartoszmilewski.com/2014/10/28/category-theory-for-pr...