I totally agree with jon.I think that's the best way to extend vocabulary.^^ Everything we need is just around the corner.^^

Expand your korean vocabulary? Just write down words in your own language and then look them up. Start with things in your home. Like lamp, desk, table, fork, fan. Then write down stuff your can find outside. Like trees, lakes, leafs, sky, clouds, ground. Then do the same for animals, bodyparts, things you can find in a city etc...

I will advice for you^ ^