Yay, finally, new grounds for a new Japanese language thread. If you want to move to Japan you're definitely going to have to go for classes, because you can't survive in Japan without good Japanese skills. ^^;; Visiting as a tourist is a completely different thing.
Hello: Yo, ya, ohayou (good morning), konnichiwa (good afternoon), konbanwa (good evening)
Goodbye: Sayonara, ja, ja ne/na, mata ne/na, ja mata