This magazine provides a simple but important overview of indigenous languages across México. In addition to maps and facts about the language, there are poetry excerpts for most of the languages as well as links to on-line multimedia.
Indolenguo is an organization dedicated to promoting linguistic and cultural diversity in Mexico. They regularly host talks on these topics, recommend books, movies, and share interesting facts about linguistic diversity in the country. Fortunately for us, they upload their talks to their YouTube channel. La mayoría de las presentaciones están en español, por lo que es un excelente recurso para los investigadores de habla hispana.
There are several organizations that offer Nahuatl language classes but of course I am going to plug my instructors at IDIEZ (The Zacatecas Institute for Teaching and Research in Ethnology). Founded in 2002, IDIEZ is a non-profit organization that offers online Nahuatl classes. The instructors are from the Chicontepec region of Veracruz so you will be learning the Huasteca Nahuatl variety. To the fortune of some of us, IDIEZ offers Nahuatl classes through the University of Michigan and some other USA universities. In addition, each summer they host an Intensive Nahuatl Language and Culture Program at the University of Utah.
I received FLAS fellowships to support my study of the language and attend the summer program. Make sure to check if your university offers FLAS or apply through the University of Utah.
The Instituto Lingüístico de Verano (or Summer Language Institute) is a nonprofit organization in Mexico that applies linguistic research of indigenous languages to language development that serves the needs of language communities. In this website you can find an array of resources including links to grammars, pedogogical materials and linguistic facts about the languages!