Here you have some usefull links
Info Tourist
Official website: www.turismomadrid.es
Transportation
Metro : www.metromadrid.es
Train: www.renfe.com
Airport www.aena.es
Bus: www.movelia.es
Musseums
Prado : www.museodelprado.es
Reina Sofia : www.museoreinasofia.es
Thyssen Bornemisza : www.museothyssen.org
Accommodation
