I mean, it isn't illegal to share tips for a game but yeah xD
I used the rocks to help me keep track of the right way forward while designing the place, and they're still a little reliable. Tho the intended way is to get the solution from Mappi Village, which you should already have access to by the time you can enter the Misty Woods (after finishing Cindy's quest). You can either pay the guru to "read your fortune", or finish the donkey quest and wait for chapter 7 to get it from the lake monster quest.
I assume most people get their first orb from the Mappi quest anyway, which gives you all you need to cross the woods. Things only get this convoluted if you happen to stumble on the first orb REALLY early, in chapter 4.
(Btw, there's some hidden treasure in the Misty Woods in the place you'd least expect. *wink wink*)