Found a few interesting Mexican websites:
aviacion.com.mx All sorts of interesting stuff here, including links with information for seemingly any kind of government application in Mexico, information for flying to Mexico, airports, schools, etc. Suposedly also a subscription service for job hunters.
FEDERACION MEXICANA DE PILOTOS Y PROPIETARIOS DE AERONAVES, A.C. A group for Mexican private aircraft owners and pilots (like AOPA in the United States). Also has an English section. Check the "Ligas" section for many links to Mexican and non-Mexican websites (lots of links to Mexican aviation legislation.
elcapi.com.mx Another site providing some links to Mexican aviation including aviation schools and skydiving, with a subscription service to job hunters.
Colegio de Pilotos Aviadores de Mexico Not an aviation academy . . . nor even a union, for a lack of better words, this organization provides a profesional umbrella for it's members-- it is probably the closest thing if pilots could get as organized as a group of professionals as do doctors and lawyers (code of ethics, participation in accident investigation, conflict disputes, assistance in applications, etc.) Also with a section dedicated to rotary wing pilots, and aviation legislation information.