Keys in the wrong place

[Connie 1949]

My @ key is where my " is and vice versa

 

[Mousemonkey]

Your keyboard may be set to US settings, or UK depending on where you are of course.

 

[Maarsch]

Yup, shift-2 being " is UK keyboard.
Short term solution is alt-shift until it makes sense.
In the long term you will want to remove the other keyboard options, which can be done according to this.