This is a blog from Sally that shows swimming pools from all around the world. Sally is also the auteur of Sydney Daily Photo, so when toi want to get out of the water for a little while, toi can discover Sydney along with her.
This is a great place to not only purchase a pool, but to also get any supplies ou info that toi might need. They have some great articles about setting up your pool so that toi can start swimming asap!
This site has a lot of good tools and articles for swimmers, parents, and coaches, including a medley relay generator, and an Ask a Swim Coach feature.