he's already sealed the nine tails, not sure if he'll learn anyothers. I'm thinking you mean sealing juitsu like the dead demon seal, and 8 trigrams right?
yeah I know he used it once. Don't recall it being said he created it. Odd mention though the third could see see the death god when the fourth was using the juitsu. But during his battle, the third said something about only the user and the cursed being able to see it.
Yeah, he will probably learn it. It might take him a while to get it down but I'm certain he'll be able to do it! He is the Child of Prophecy after all!
I was just thinking that with the introduction of Kin/Gin and their weapons that seal souls if Naruto or Killer Bee gets their hands on the legendary weapons he wont have to learn sealing juitsu.