I just watched "The Force Awakens", and have been obsessively reading through all questions tagged with it for the past couple days. It seems to me like there is a little bit of a debate with whether or not Kylo Ren is actually adept at using the Force. For example, this question, and this question both discuss Kylo seemingly being very mediocre at using the force.
So is Kylo good at using the force or not? There are definitely arguments both ways. For example, these all imply that he is talented
He can stop a blaster rifle in midair, and hold it there for a good 5 minutes while walking around and talking to the stormtroopers. That would probably take a massive amount of physical energy to stop a laser with so much energy and a massive amount of mental energy to be able to hold it there while carrying on with business as usual. We have also never (to my knowledge) seen a previous Jedi/Sith do this.
He reads Rey's mind. And Poe's mind. While this has been seen in previous movies, he clearly has great skill when it comes to mind reading. We have also never seen someone so directly reading someone else's mind.
He pulls the general all the way across the room and holds him in the air in a rage of fit when he learns of Finn and Rey escaping.
He is related to Anakin, and trained by Luke. While that doesn't automatically make someone talented with the force, it means he must be very genetically predisposed to the force, and he was trained by one of the best.
However, there are also plenty of arguments in favor of him being very poor at using the force. For example:
He is unable to withstand Rey reading his mind. Although I suppose you could chalk this up to Rey being very talented with the force, rather then Ren being bad at it.
He loses in a light-saber battle with Rey, who has no force training whatsoever. Though you could also say this is because of Rey's talent, he also just barely managed to beat Finn just minutes earlier. This shouldn't have even been a contest, as Finn has no force sensitivities, and most likely very little training in melee-combat.
He is unable to pull the light-saber out of the snow after the fight.
He is hit with Chewie's bowcaster on the bridge scene. No Sith Lord in any of the previous movies would be hit by a blaster rifle, because they could so easily deflect it with their light-saber.
So which is it? Is he talented or not?