I learned to swim at a pretty early age and pretty much figured it out on my own from watching others, but I hated to put my face under the water, especially getting my ears or my nose underwater. I still don't like doing that too often. I have never understood how someone could drown by just falling in water, as I quickly learned how easy it was to stay afloat by taking a deep breath, and paddling.
My swimming form is terrible, but I am remarkably good at it. I usually do just overhand freestyle, as that what seems to be most efficient for me. I can do the butterfly, and it's good for going through high seas and waves, but it doesn't get me particularly far quickly.
When I was a teenager, like 18 or 19 or so, I swam across the Piankatank river near the Chesapeake Bay (about 2 miles) to Gwynns Island. I remember crossing the channel where it's over 30 feet deep, and almost getting run over by some big motor yachts. I did it just to see if I could, but after I got to the other side, I then got bored with it and didn't feel like swimming back. The problem was that by land, it was about a 40 mile trip up river to a bridge to cross back over to get back to the campground I was staying at. I ended up deciding just to swim it back, but about halfway across, I swam up to a boat where a bunch of people were fishing, and they let me climb aboard. There were some nice looking girls aboard too. I hung out with them for a little while, and then they dropped me off at the sandbar near the campground about 1/4 mile out, and I swam it back.
That excursion took most of the day, and when I got back, my family was worried where I went, because my car, boat, and my bike was still at the campground, and they couldn't figure out where I went without any of those!