ALright, so you're just at the beginning. I nthe main Waldwood map (where you met Illonia), and from there go north, up the stairs. You'll meet the ogre and Elleria, Illonia's mother. You'll now need to take him down. Go back to see Desiderius, he'll help you make a plan, and you'll need a fairy for it. THe path to the south forest will now be opened, go there ,and go on the southwest map, in the lake. You'll meet a new character that'll help you go to the southeast part of the forest, where you'll find a fairy. Once you've met the fairy, go back to see Desiderius, you'll have a training session, then you'll be able to fight the ogre where you met him first.