The best place to go for game play hints is the Ambrosia Web Board. If you register, and why not, it's free! you can post your question, where it will be read and soon answered by other players and fans. You can also scroll through questions and answers already posted. The boards are also searchable, so if you're interested in something particular, you can look it up!
If you want the real low down on how to beat Cythera then the Cythera Hintbook is the way to go. The Cythera Hintbook has maps of every town and city in Cythera. It lists every character, and every object that can be found. Most importantly, it gives spoilers to every mystery in Cythera, including how to solve the Riddle of the LandKing. The Cythera Hintbook is now out of print, but if you would like a copy, contact us, and we'll see what we can do for you.