I gave this one a 3/5. It was better than the last two chapters, but still wasn't great. The first half of the chapter was still a waste of time. We get it: Obito loved Rin and he watched her die. We already KNEW ALL THAT. As soon as Obito told Kakashi that "You let Rin die", we already knew everything we needed to know. Wasting our time with a long, drawn-out flashback was unnecessary. Showing Obito holding her dead body was touching, but wasn't important for the story to progress. We would have believed that Obito turned evil because of Rin's death even if he hadn't personally witnessed it, or if we didn't see an elaborate weeks-long flashback.
The second half of the chapter is where things get a little bit more interesting. We see where Obito learned some of his more interesting techniques, including rikudou techniques (including, possibly, his 6-paths, chakra chains, bijuu sealing techniques etc), yin/yang techniques, and Uchiha kinjutsu like izanagi and that awesome fire barrier he used.
We also learned some new things about the formation of Akatsuki: Madara himself didn't start Akatsuki. Instead, Obito (as Madara) met Nagato before the death of Yahiko and talked about the idea. This opens the possibility that Madara taught Nagato some techniques including the 6-paths technique and summoning the gedo mazo.
HOWEVER, the big glaring hole is this: Did Madara plan on meeting Obito, and if not, what was Madara's plan before he met Obito? Did Madara manipulate events to ensure Obito joined him, or did Madara plan to abduct ANY young Uchiha to help him, and it just happened to be Obito? If Madara didn't recruit any helpers, how did he plan to get Nagato to resurrect him later? Or, did Madara intend to die at all and instead stay alive forever attached to the gedo mazo? This is the big question on my mind, and the manga will be a big failure for me if it ends without answering this.