Harvest Moon 64 Tips

Harvest Sprite Helpers
When you first start out your game:

Talk to the Harvest Sprites Every day and give them herbs that you find in the cave that they live in.

Eventually, in summer when you have a typhoon, the day before one hits the Harvest Sprites will drop by and stand in front of your house. Talk to them, and they'll say something along the lines of "Oh No! A Typhoon is going to hit! Don't worry we'll feed them." (Them being your animals).