Board Thread:Theories and Speculation/@comment-3001903-20151205022433/@comment-3965545-20151206093842

Madara taught Obito Yin/Yang Techniques and about the Rinnegan techniques(Minus Limbo and Tengei Shinsei obviously). It showed so in the chapter that he confronted the Ame Orphans. He even tells Nagato he can help him fully master his Rinnegan. Chapter 599 or chapter 600? it was around the Obito reveal but after Rin dies. Nagato was most definitely trained and taught in the Rinnegan after Yahiko's death by Obito himself.. but it was Nagato who invented the 6 Paths of Pain technique.