1997 Ford Taurus Not sure what's wrong.

I went through some water about one or two feet deep and my car stalled. My friends came 10 minutes later and helped me push it out and I drove it home, but the engine was very loud. I tried to start it the next day and I found that my oil pan had a hole at the bottom. I figure I should fix that first and try to start it and see if it works. I was wondering how I could replace the oil pan and what other kind of damage could it have?