I volunteer at a large county hospital here in Houston,Texas. Daily in the ER we have a good 60% spanish-speaking patients. I am fluently bilingual and help out wherever I can with the translation...
Volunteer at the hospital you are looking to work at as a translator. If you can pass their exam then later when you apply you can state that you pass their definition of
I highly reccomend immersion programs. I had a rough childhood at home and took off to aguascalientes mexico for 8 months. I had had basic exposure in school before hand but became quickly fluent....