WARNING: The following articles contains spoilers for director Rian Johnson's Star Wars: The Last Jedi, in theaters now.
Star Wars: The Last Jedi marks a turning point not only for the new trilogy but for the entire franchise. The Resistance is reduced to a handful of survivors packed into the Millennium Falcon, and Supreme Leader Snoke and Luke Skywalker are both (presumably) dead. And while General Leia Organa survived the film, Carrie Fisher's death last year means we won't see her in the sequel. The galaxy is in turmoil after the fall of the New Republic, and the First Order is now led by Kylo Ren. However, beneath all of that, there's still the spark of hope, for the rebellion and for the Jedi.
But where do the Jedi go from here? Obviously Rey underwent some training from a reluctant Luke, but nothing like the instruction he received from Obi-Wan Kenobi and Yoda. While it's implied that Yoda's spirit destroyed the ancient Jedi texts, in a blink-and-you'll-miss-it moment, Finn inadvertently reveals that Rey took the books with her when she left Ahch-To. On top of that, Luke fading away after his confrontation with Kylo suggests he can return as a Force ghost, just like Obi-Wan and Yoda. Between the books and Luke's spirit, it's entirely possible that Rey completes her training to become a Jedi.
There's also the question of Kylo Ren, and the possibility of his redemption. Luke even warns, "If you strike me down in anger, I'll always be with you." Even though Kylo doesn't kill Luke, he certainly attempts to strike him down in anger, and Luke becomes one with the Force shortly thereafter. That certainly hints that Luke's ghost will haunt Kylo, literally and figuratively.
Kylo's Force bond with Rey also seems to be intact, despite Snoke's claim that he's responsible for it. Whether that bond remains after Rey metaphorically closes the door on him is still to be seen. Kylo expresses his eagerness to leave the past behind, but instead of taking the "forgive and forget" path, he opts for "burn it all down." It's entirely possible Rey will use their connection to turn Kylo's words back on him, convincing him that forgiveness is better than destruction.