I am pretty new to mac and am still trying to figure things out. My 6 year old last night and this morning was playing on the mac and now the volume buttons don't work properly. When I hit the mute button it shrinks all open windows and shows them all at once. When I hit the volume down button it's like the screen minimizes but it goes to the top. When I hit the volume up button dashboard pops up. And I also just figured out that when I type text, the mac tells me what I am typing, kinda neat at first but gets old fast. How do I fix this?