A little video that hits on my biggest beef with VII. 

EDIT: And, no, there's no excuse as to why Kylo gets whipped on by two absolute beginners - no matter their innate Force sensitivity. He's young, yes. His training in the Dark Side is incomplete, yes. BUT he has been trained, he's part of the Knights of Ren - who he unquestionably spars with - AND he began his training as a youth under LUKE SKYWALKER. 

Let's not try to wash this one away, people. This is a major indicator that the people who are currently writing the Star Wars films are not versed in the culture or canon. This was (partially) relieved in the Trek films by creating an alternate universe/timeline for the rebooted franchise. Unfortunately, Disney is playing these new flicks off as sequels (not remakes). 

Too many ppl complaining about unexplained stuf in the first movie of a trilogy, its suposed to have unexplained stuf otherwise it would be just 1 movie not a trilogy. That aside the main tipics ppl bring up were clearly explained withim the movie to anyone who was actualy paying atention.

About Kylos duel, he isnt well trained Snoke makes this painfully obvious like 4 times in the movie, hes strong with the force but he doesnt realy ahve all that controll over it, and who would he pratice dueling wiht ? His moves during the duels are all wide and somewhat goofy, he obviously isnt great with a lightsaber (yet). Finn has training in hand to hand combat, hes a stormtrooper and we even get to see one stormtrooper whos a elite at hand to hand combat (who would probably have beat Kylo on a 1x1 duel if Kylo couldnt use the force to choke, push and stuf) fighting with a vibro staf, its not far fetched to think every stormtrooper gets to train with a vibro blade, specialy considering the first order knows jedis exists, and finn looses both duels he has in the movie, the first we see he knows how to handle himself but isnt anything great, the second he still isnt anything greta but hes fighting an injured Kylo and hes fighting with added motivation as he is protecting Rey. Rey knows how to fight with a staff very well, she was not completly untrained and was fighting a 2x injuried Kylo (one of the injuries came from a weapon that wouldve killed anyone who couldnt use the force btw, the movie showed that bow blaster blowing ppl up 3x at least), and she awakens completly to the force mid duel giving her an edge. On top of all that Kylo, hows conflicted troughout the movie, has just kiled his father and trough Adam Drivers expression we can see he is having second toughts cause that most likely didnt queltch the "temptation of the light".

About Rey learning stuf, she knows the legends (thats also made very evident 2x on the movies), its implied that she knew already she had the force but didnt want to belive/admit it, she had already had a vision so she felt the force vividly already, she had an episode where she was inside Kylos mind, she now had all the info she needed to try doing force stuf. A jedi mind trink is pretty basic (specialy performed on a stormtrooper standing 1 inch from her looking straight to her eyes), as well as a force pull, thats basicaly what she does, atuning to the force to become faster and have faster reflexes is also basic and she does what Mas Kanata told her to do, close her eyes and feel the force around her. Another snipet showing how shes using the force to do stuf even before she properly awakens to it is the scene shes shooting with a blaster, the first shot misses completly, the second she hits square in the face of the stormtrooper and Daisy Ridley totaly changes her expression when pulling the triget the second time, she has a look of pure focus and peace, after the shot lands Rey looks to the blaster puzzled, like questioning herself, what the hell have I done, and than she proceeds to land 2 more shots.

Another consideration, Rey is clearly super strong with the force, probably Anakin level or maybe more so, Anakin to those who dont know was good at everything he tried to do and he mastered the force younger than anyone else has ever mastered, even as a child he could use the force to do stuf (like the pod racing scene on Ep 1) without realy knowing what he was doing. Reys true awakening to the force is such a hughe event that it sends ripples on the force all the way to Snoke, the dude notices her awakening, its not just any everyday force user that can cause a disturbance in the force of this proportion, Kylo Ren is dead scared after he atempts to read Reys mind and notices the extent of her power, he knows the girl is OP and he tells it to Snoke: "shes strong with the force, untrained, but stronger than she knows" are his exact words and theyre delivered by an Adam Driver in a shacky voice looking like hes beginning to panick .

The movie actualy does an awesome job of telling everything we need to know, its all there, multiple scenes showing the effect of that bow blaster, Snoke telling Kylo he needs more training, Mas Kanata telling Rey how to let the force in, stormtroopers knowing how to fight hand to hand, Reys skill with a staff, Adan Drivers expression of fear when he feels Reys power, the mentions that Rey has heard about the jedis legends etc. You ppl just didnt pay atention to any of that, or to the actors expressions and body language, and would prefer a 100% exposition movie it seens.

To finish its possible that Rey had previous training and had her mind wiped when she was hiden in Jakku, I dont think thats the case but thats a plausible theory lots of ppl seen to think will be the case once Ep 8 comes around. Someone definetly hid her in Jakku, it mightve been to protect her when Kylo started killing the other jedis on Lukes new Jedi Order.

Too many ppl complaining about unexplained stuf in the first movie of a trilogy, its suposed to have unexplained stuf otherwise it would be just 1 movie not a trilogy. That aside the main tipics ppl bring up were clearly explained withim the movie to anyone who was actualy paying atention.

About Kylos duel, he isnt well trained Snoke makes this painfully obvious like 4 times in the movie, hes strong with the force but he doesnt realy ahve all that controll over it, and who would he pratice dueling wiht ? His moves during the duels are all wide and somewhat goofy, he obviously isnt great with a lightsaber (yet). Finn has training in hand to hand combat, hes a stormtrooper and we even get to see one stormtrooper whos a elite at hand to hand combat (who would probably have beat Kylo on a 1x1 duel if Kylo couldnt use the force to choke, push and stuf) fighting with a vibro staf, its not far fetched to think every stormtrooper gets to train with a vibro blade, specialy considering the first order knows jedis exists, and finn looses both duels he has in the movie, the first we see he knows how to handle himself but isnt anything great, the second he still isnt anything greta but hes fighting an injured Kylo and hes fighting with added motivation as he is protecting Rey. Rey knows how to fight with a staff very well, she was not completly untrained and was fighting a 2x injuried Kylo (one of the injuries came from a weapon that wouldve killed anyone who couldnt use the force btw, the movie showed that bow blaster blowing ppl up 3x at least), and she awakens completly to the force mid duel giving her an edge. On top of all that Kylo, hows conflicted troughout the movie, has just kiled his father and trough Adam Drivers expression we can see he is having second toughts cause that most likely didnt queltch the "temptation of the light".

About Rey learning stuf, she knows the legends (thats also made very evident 2x on the movies), its implied that she knew already she had the force but didnt want to belive/admit it, she had already had a vision so she felt the force vividly already, she had an episode where she was inside Kylos mind, she now had all the info she needed to try doing force stuf. A jedi mind trink is pretty basic (specialy performed on a stormtrooper standing 1 inch from her looking straight to her eyes), as well as a force pull, thats basicaly what she does, atuning to the force to become faster and have faster reflexes is also basic and she does what Mas Kanata told her to do, close her eyes and feel the force around her. Another snipet showing how shes using the force to do stuf even before she properly awakens to it is the scene shes shooting with a blaster, the first shot misses completly, the second she hits square in the face of the stormtrooper and Daisy Ridley totaly changes her expression when pulling the triget the second time, she has a look of pure focus and peace, after the shot lands Rey looks to the blaster puzzled, like questioning herself, what the hell have I done, and than she proceeds to land 2 more shots.

Another consideration, Rey is clearly super strong with the force, probably Anakin level or maybe more so, Anakin to those who dont know was good at everything he tried to do and he mastered the force younger than anyone else has ever mastered, even as a child he could use the force to do stuf (like the pod racing scene on Ep 1) without realy knowing what he was doing. Reys true awakening to the force is such a hughe event that it sends ripples on the force all the way to Snoke, the dude notices her awakening, its not just any everyday force user that can cause a disturbance in the force of this proportion, Kylo Ren is dead scared after he atempts to read Reys mind and notices the extent of her power, he knows the girl is OP and he tells it to Snoke: "shes strong with the force, untrained, but stronger than she knows" are his exact words and theyre delivered by an Adam Driver in a shacky voice looking like hes beginning to panick .

The movie actualy does an awesome job of telling everything we need to know, its all there, multiple scenes showing the effect of that bow blaster, Snoke telling Kylo he needs more training, Mas Kanata telling Rey how to let the force in, stormtroopers knowing how to fight hand to hand, Reys skill with a staff, Adan Drivers expression of fear when he feels Reys power, the mentions that Rey has heard about the jedis legends etc. You ppl just didnt pay atention to any of that, or to the actors expressions and body language, and would prefer a 100% exposition movie it seens.

To finish its possible that Rey had previous training and had her mind wiped when she was hiden in Jakku, I dont think thats the case but thats a plausible theory lots of ppl seen to think will be the case once Ep 8 comes around. Someone definetly hid her in Jakku, it mightve been to protect her when Kylo started killing the other jedis on Lukes new Jedi Order.