At the name selection screen pick the girl and put a heart before you type in the name, then pick the cat as your pet and put a heart at the begining of its name.
First water your crops. Then go to sleep. As soon as the screen goes white, turn your Game Boy off. When you turn it back on again your crops will be ready
Wait until one of your chickens lays an egg directly above the shipping box. Water the egg and it will turn into a block. Now pick up the "egg", and you will have infinite eggs, and lots of money!
