The only opportunity to change your mind is at the end of the quest 'The Jagged Crown', if you chose Stormcloak but prefer now to support the Legion, you can take the crown to Solitude, to General Tullius, who will accept it from you and you will then follow the Legion's missions for the remainder of the civil war quest line.
Yes Stormcloaks are racist towards everyone who is not from Skyrim.
Imperials are better, they are trying to set up a government while the stormcloaks are starting a war they can't win
Kill a Stormcloak officer.
yes u just have to do quests for the empire like you did for the stoarmcloaks and also help the empire take cities and bases
If you support the Stormcloaks for the Civil War quest, then yes, Jarl Ulfric will become High King of Skyrim. If you join the Imperial Legion, he is killed.
Factions you can join: Companions College of Winterhold Dark Brotherhood Stormcloaks Imperials With the Dawnguard DLC: Volkihar Vampires Dawnguard
No, I have finished Theives Guild and Dark Brotherhood and nothing's happened to either of the factions.
You can start the Jagged Crown quest, and take the crown to the leader of the opposing faction. So instead of returning the crown to Ulfric, take it to General Tullius instead. However once you complete that quest, that's the point of no return.
no.
Bards College-The Blades-The College of Winterhold-The Companions-The circle-The Coven of Namira-Dark Brotherhood-Imperial Legion-Nightingales-Stormcloaks-The Thieves Guild
If you mean the high king, yes I believe that you can side with the stormcloaks and then you kill the leader of the imperials and Ulfric is like oh I don't want to be high king, so in effect you can become high king.
Even if you joined the Imperials, you can switch sides by doing the Jagged Crown quest, delivering the crown to the Stormcloaks. However if you've already completed it in favour of the Imperials, then there's no way to switch sides.