As soon as you exit the first castle (the one you started in), go straight down and you will see a peak of land. Enter into the water where the longest part of the peak ends. You will fight Death (which is an easy battle). Note: To restock, go back into the water and you will not have to fight Death again.

When you leave the first castle where you start the game, before moving west to the cave, go south to where the water is located. At the rightmost south corner, you can enter the water and fight a small drawing of something that cannot seem to hurt you. One hit will kill it. You will get an amazing amount of experience points. When you fight in future battles, you earn a level for each fight. This stops working after awhile.