I began some Korean self-studying and found that koreanclass101 and Talk to Me in Korean (ttmik) have pretty good audio lessons. The rest of the process was try

I began some Korean self-studying and found that koreanclass101 and Talk to Me in Korean (ttmik) have pretty good audio lessons. The rest of the process was trying to get my hands on as much material as possible - practice with native speakers, children's books, dramas, readers, flash cards, etc. Anki is incredible for memorizing a huge number of facts (e.g. words), but can only power one part of the whole experience. Finding material can be hit or miss, so don't be afraid of spending small amounts of money here and there on books, etc. I will say that prepackaged courses like Rosetta Stone and Pimsleur will not get one very far. Just tell him that Korean's not too bad to learn once you already know English, Chinese, and Japanese - that'll really encourage him!