Adjetivos

placement of adjetivos

http://spanish.about.com/cs/grammar/a/whereadjective.htm

cambio de sentido

http://spanish.about.com/od/adjectives/a/adjective_placement.htm

Agreement
http://roble.pntic.mec.es/acid0002/index_archivos/Gramatica/adjetivo.htm

Past Participles as adjectives

http://conjuguemos.com/home/docs/nologin/spanish_fillin_grammar_23.html