Training materials
Authors: F. Abascal, J. Aguirre, E. Andrés-León, D. Baji...
and Contributors: Brane Leskosek or Branka Franicevic or Hadley Wickham or Michael Ball or Portada: Enrique Sahagún or Prof. David Willaim Burt or Sergio Martínez Cuesta or Vicky Schneider