You found the place right here!!
Just be specific on what you have to work with and you'll get all sorts of replys on how to go about making it happen.
Pond Boss Magazine Home Page! is a site similar to this one, but specializes in ponds. It's not so much into the actual dirtwork, but more on the fish and managing it for fishing.
What type of pond will it be? Dam? Dugout?
Is it in a creek? A field? Where will the water come from? Watershed?
Where will the excess water go? How will it get out of the pond in heavy rains?
How big will it be?
Do you have to clear timber to build it?
Are you going to build it yourself?
What equipment do you have? Are you renting, borrowing or buying additional equipment?
What are you goals for the pond? Fishing? What type of fish? Stock water for animals? Scenic for adding beauty to your land? Swimming for the kids?
Do you want a dock or pier?
These are just a few questions off the top of my head that you need to know the answer to before starting. A budget is also important as well as a time frame. If you are in a hurry to make it happen, it will cost more. If you do it yourself over time, it will be cheaper.
Are you in an area of the country that you have to get permits to build a pond?
There are allot of pond projects on this site that have been done over the years. Do a search for "Pond" and go back about five years. Some of the very best pond projects were that long ago and one of the reasons I joined this site.
Good luck,
Eddie