no this is not a stupid question. I think you meant space-time techs.Maybe Naruto dont know how to do?Why doesn't Naruto just teleport to everyone right now like he did when he came back to Konoha. Hopefully this is not a stupid question.
He meant Summoning. not Shunshin. But shunshin is an answer, otherwise he will have to depend on frogs.Do you mean Shunshin ?
yes. frogs summoned him. I think it was gamabunto or gamakichi.its not a dumb question...I think one of the frogs that was in Kanoha summoned him, but im not too sure though xd