What? Why?

What is this? a book?

A blog? a wiki? a tutorial? a reference? a manual? a guide? a course?

A cheatsheet? a collection of notes? a collection of essays? a collection of articles?

A collection of recipes? a collection of examples? a collection of exercises?

A collection of solutions?

A collection of problems? a collection of questions? a collection of answers? a collection of ideas? A collection of thoughts? a collection of opinions? a collection of tips? a collection of tricks? A collection of hacks? a collection of patterns? a collection of best practices? a collection of principles? A collection of rules? a collection of guidelines? a collection of conventions? a collection of standards? A collection of specifications? a collection of requirements?