Study notes for various books, papers and articles I read, as well as lectures and videos I watched.
littleschemer: scheme source code and some notes in markdown on The Little Schemer.
typeclassopedia: a summary of the Typeclassopedia as Emacs org-file and HTML
monads: summary of Brian Beckman's video "Don't fear the monads" as Emacs org-file (not suitable for HTML export)
mysql: notes on MySQL performance tuning
postgres: a summary of two articles and one video on tuning PostgreSQL, especially in combination with Ruby on Rails (Emacs org-mode)
ruby-performance: notes from Aman Gupta's talk at Frozen Rails 2011
c64: notes related to Commodore 64 machine language and assembler