Lucca was in Lahan in the training House. You could pay her to give an overly complicated explanation on how the Save Points work. Interestingly enough, there are quite a few things you can do in Lahan that unlocks some goodies much much later in the game.

I use to say Xenogears should have been FFVII so I'm kind of laughing that it was originally asked to be that way. Reading up on Saga's thoughts though, just makes me wish NoA would finally announce Xenoblade for the U.S. Yeah, I know she didn't work on it but I respect her husband as well and been hearing nothing but good things about it. I want to see if its true that he learned not to let story overtake gameplay.