Ros is correct. You need proficiency in a language to give you an added bonus on your processing. If you want to go that route, then the best one to take is the culture in your area. If you live near a Korean neighborhood, and your interested, then learn Korean. That way you can use it and submerge yourself in the lingo and customs that come with every culture.
Good luck.
Eunice: A .22? Oh you've gotta be kidding me. That's like bringing a knife to a gunfight.
Detective Greenly: Yeah, or bringing a really small gun... to a gunfight.
Boondock Saint II