Sorry to see youre having a bad experience trying to figure things out. I was in the same boat before.

Pretty much what the others say about the class changing. You need to do the level 10 class quest. Your guildmaster will say something on the lines of pursueing other interests/guilds. Its also a good idea to keep up with the class quests. They provide free gear and essential spells.
Also keep up with the main scenario quests (flaming quest giver icon). You will get an airship pass that allows access to the other cities and their respective classes and jobs.
For the autotranslater, just hit tab if youre on a computer. Not sure how it works with a console. You can type a word then hit tab, then choose your word/phrase.