Korean (letter) is easy. Korean (language) is quite difficult. There are many irregular syntax and postposition. Also, there are many rules for a prolonged sound.

Modern Korean no longer distinguishes a prolonged sound at least in the written form. Virtually all words that cannot be set apart without a prolonged sound have been changed to those that can. For example, a short 이 ("teeth") and a long 이 ("two") are now homonym in most dialects of Korean; the former 이 has many synonyms like 이빨 or 치아 however, so they can be often distinguished without a context.

yeah... that's a bit more difficult. i picked up the korean alphabet in an afternoon, and was able to read out loud almost any korean text put in front of me. after studying the language for a few more months, i was still only at a very low beginner level when it came to recognizing anything i read. i think it's one of the more difficult languages to learn.

That's what I feared. Unless you are willing to commit time/effort to really learn the language, I fear the usefulness of this is limited to impressing friends and staff at Korean restaurants.