Spoilers

Good afternoon!
Did you know that if you go past the little hedge in the garden, between the yew and the nightshade, you will find a small door in the wall? Have you ever gone through it? You should do that at least once, when you have the time. It may take a while to find your way back, but don't worry, you'll make it all right, just so long as you don't keep all your knickknacks to yourself.
When you find the bejeweled egg in the nest on top of the tallest tree you've ever seen (the one you wont be able to resist climbing) keep it safe, don't drop it. The mother has gotten lost and will reward you well for bringing it to her.
Don't trust the old man with the key, he doesn't realize you aren't his arch nemesis, and is looking to have you locked in a dungeon for five months. When he reveals this to you, set him straight and offer to help him find and defeat the ersatz nemesis. You'll gather friends on the way to help you, of course.
don't trust any friendly-looking raccoons, rabbits or renuculas.
Always trust bears, bluebirds and begonias.
Remember the riddle-solving part of your brain, but forget the part that's based solidly in physics and chemistry. Also, the geometry there is strictly non-euclidean
But, look, I've given away too much already. You'll really have to figure this all out on your own. Just go, and find out for yourself.