language : http://codex.wordpress.org/I18n_for_WordPress_Developers

writing plugin:
o岩o岩開波d format : http://codex.wordpress.org/Plugin_API
action/filter default hook:
http://codex.wordpress.org/Plugin_API/Hooks_2.0.x

hook list with src:
http://adambrown.info/p/wp_hooks/version/3.2