Man, I played that game for years... I've since quit but I had my fun on it in the past. Hermits clearly dominate everyone else (I don't care what you say about the new classes being stronger, Hermits are where it's AT)
Can't figure out how to use the skills i got from the 'K' button. Explain?
Love Facebook's 'MapleStory Adventures' :D
See the uhh, keys on the bottom right corner of the screen? Shift, insert, page up/down, etc? You can drag your skills and potions onto them. You can also open up the key configuration window somewhere near the bottom corner above Cash Shop, Trade and Menu. The same thing applies, just drag your skill/potion onto a key and click save.
If that wording was too bad you can always google it, I'm sure there'd be a video on Youtube or something.