The general rule is to do what you would normally do, but in Spanish. One great example is watching movies.
It should be easy to find movies from these internationally-known Mexican filmmakers:
- Guillermo del Toro directed El Laberinto del fauno (Pan's Labyrinth)
- Alfonso Cuarón is famous for Y tu mamá también
- Alejandro González Iñárritu directed Amores perros
All three men worked on the 2008 film Rudo y Cursi and are also known for their English-language films as well (including one of the Harry Potter films, the Hellboy movies, Babel and 21 Grams).
The Spanish filmmaker Pedro Almodóvar has a long list of hit films, including Volver, Bad Education, Talk to Her, All About My Mother, and Live Flesh.
El Secreto de Sus Ojos is an Argentinian movie that won an Oscar in 2009 and Diarios de motocicleta came out in 2004.
Instead of looking for something specific, the best approach is probably to browse what is available and easy to get on Netflix, OnDemand or in your local Blockbuster store (if you live near one that's still open)--then pick something that would genuinely interest you.