Hello futuresweets10 and welcome to Pond Boss. You've probably already done this but make sure you know any and all regulations that govern the construction of ponds in your area.
Next, if you haven't allready I would get the
USDA Agriculture Handbook 590. It is a great publication.
Visit the Pond Boss resource library.
There are some great book here including "Perfect Pond, Want One? A pond that is too shallow can become overrun with vegetation.
Anyone can dig a hole. A pond must be constructed keeping in mind watershed, bank slopes, bottom contours, etc.