Q:Princess Rhiannon is under a spell in the woods. The fox faery says I should be able to free her, but I don't see how.
A: As far as I could tell, she's freed on her own, in time.
Q: I can't afford the flute in the jeweller's shop (the miserly cow only gives me one ducat for the conch)
A: There are many ways to gain coins in this game. The goblins are one very easy source, and you thereby get the chance to keep the conch shell and the other valuable items you gain over the course of the game, to use in other ways that might gain honor and wisdom. If you're intent on playing through, however, the tailor's shop might have your answer re: quick money.
Q: I don't know how to get into the hole outside the ogre's lair.
A: Whatever's inside that hole isn't very dense.
Q: I don't see how to get a pumpkin.
A: You need to convince the scarecrow. He won't help you the way he is now. If you give him something, that's a different story...and the proper gift involves getting very wet.
Q: I don't know how to help the pigeon with the broken wing.
A: Who is good with animals?
Q: I'm not sure whether I can get the matches from the shop in the market.
A: You can, but it's a tricky maneuver. Are there alternative ways out of the city? Perhaps one involving your character annoying someone else?
Q: I've found the portal but can't get through it.
A: Show the bard your bored stone and see what he says.