Ferrell Jenkins notes on his Travel Blog that he has posted some Spanish-language materials on his Bibleworld site. You can find them here about halfway down the page. There are also English-language materials for download.
There are not yet many places to find sound Bible material in Spanish. Wayne Partain and Bill Reeves have web sites with materials for download. Jaime Restrepo in Colombia has translated articles and materials for years.
Spanish denominations & assemblies now exist across the U.S. in almost every city of any size. Just check your Yellow Pages or go to Google Maps and enter “Iglesia” or “Dios” to search near your area. How much fresh potential is there for the Gospel in our own country?