The C# Yellow Book is going worldwide, which is wonderful. I've just agreed to the publication of a Korean version. I got an email a while back from an agent and we a presently drawing up the contracts to get it translated and into the shops.
I've only been to Korea once, I spent a week or so in Seoul as part of the 2007 Imagine Cup World Finals. It is a wonderful place. I'd go back there in a heartbeat.
I really hope I can get hold of a printed copy when it is ready. I'd love to be able to point at it on the bookshelf and say "I wrote that....".
If you are happy with an English version you can get a copy, along with a complete undergraduate course, from here: