I can speak it but have never tried to write it.
sorry....you might try that program advertised on TV....Rosetta Stone I believe it's called....don't know if they'll try to teach you Castillian Spanish or street spanish...heck it doesn't matter. it changes from State of Mexico to the next and from one spanish speaking country to the next..
As TB said, if you don't use it you lose it.
I work with them every day, so, I can make myself understood. The Spanish I learned in school was Castillian. These guys don't act like they know what the he77 I'm sayin , but I know they do.