Directed by: J.J. Abrams
Starring: Harrison Ford, Mark Hamill, Oscar Isaac, Carrie Fisher, Adam Driver, Domhnall Gleeson, John Boyega, Daisy Ridley, Gwendoline Christie
Kylo Ren is really Ben Solo, son of Han Solo and Princess (now General) Leia. Han is killed by Ren in Starkiller Base. Tapping into her dormant Force powers, Rey fights Ren in the snow outside, as the planet is ripped apart after the strike team scores a fatal blow. Separated by a chasm, she and Finn escape on the Millennium Falcon while Kylo Ren, injured, is retrieved and taken to Supreme Leader Snoke to complete his training.
Back with the Resistance, R2-D2 awakes from his low power mode and provides the missing piece of the map leading to the location of Luke Skywalker. Rey takes his lightsaber and flies out on the Falcon with Chewbacca, meeting Luke, who's standing along on a cliff, clearly having sensed her pending arrival...
Continuity mistake: After Rey touches Luke's lightsaber she begins to have the vision, and when she falls to the floor the blaster is missing from the back of her belt, but after she "sees" Luke and R2 and then stands up the blaster is back again, tucked into her belt (even though Rey's having her vision of things all around her, she herself is not a vision).
Poe Dameron: Do I talk first or you talk first? I talk first?
Question: This is a two part question. Firstly how many students did Luke have before his academy was destroyed by Kylo Ren? Secondly what will happen to the New Republic now its capital is destroyed?
Answer: We learn in The Last Jedi that Luke had Ben Solo/Kylo Ren and a dozen other apprentices. Kylo killed 6 of them and took the remaining six as is apprentices, the Knights of Ren.
The knights of Ren are not the six apprentices Kylo takes with him. The knights of Ren are Snoke's followers, dark force users. Kylo joins them and becomes their leader later on.
Answer: Any answer would be conjecture - best just watch the next movie.