Has anyone tried learning another launguage

When I worked in the auto industry I wish I could've learned Japanese, they would talk amongst themselves and i wouldn't know what they were saying, same as when i was in Canada, some spoke French amongst themselves and i wish i could've knew what they were saying. Some couldn't understand me because my Hillbilly language was so different than other Americans, I was asked alot what part of the US I was from, I told them Appalachian part of Kentucky, our language is a little different. :)