Well first you have to have all the gym badges, then you go to the Pokemon League. Then after you defeat the elite 4, you go to where the champion is. When you get there,
you find that N has defeated the Champion already and now N is the champion. Then N's castle rises out of the ground around the Pokemon league, then a stairway appears that you take to N's castle so that you can stop him.
Yes but you have to completely beat the game in pokemon white first or else you can't
First you have to beat the main story
Yes, if playing White Version.
No stupid it's imposible
You have to beat the game first.
Yes, but not until after you beat the E4
You can only get reshirem in Pokemon black not white. Its after you beat the Pokemon league for the first time. When you get to the champion team plasma boss will be there with the champion. Then you just follow the story line until you see the leader summon reshirem and your dark orb glows and transforms into zekrom. Then you catch it then fight him
I don't know oh yeah i do after you beat the league
you have to beat the elite four on white and when you come out of the pokemon league, champion alder will come out too and give it to you
You can beat Skyla the gym leader with a higher level pokemon or with electric or rock type pokemon. And I do not reccomend using grass or bug types.
No you can't you have to beat the first gym then you can trade
Yes. After you beat the main story, you can migrate from daimond, pearl, platinum, heartgold, and soulsilver versions to black and white