Scott-
You are right about where I was several years ago. What really helped me was getting a copy of the book, "Perfect Pond - Want One?", which can be ordered off this site. Go to the home page and look under "Pond Boss Store". I've read it many times and value it so much that I can't even remember what I paid for it.
Also, I recommend doing a search and downloading a copy of US Dept. of Agriculture Handbook 590. I did a ton of research before building my pond and consider this the absolute best reference out there on pond design and construction.
But when it comes down to it, most of what I learned was from this forum. You can spend many long evenings reading archived threads and finding answers to questions you havn't even thought of yet.
Tell us a little about the pond you would like to build... size, depth, for fishing, swimming, etc.