This sounds like you have had some type of software loaded onto your computer that has remapped the keys from the standard QWERTY layout to the alternate QWERTZ layout. See if your keyboard's key assignments are similar to said layout as described in http://mentalfloss.com/article/52483/6-non-qwerty-keyboard-layouts.
The way to switch it back to normal would be to find the software that has changed the layout away from standard. As I cannot view your machine from across the internet, there is no way for me to tell you what that program could be. My advice would be either to try to track it down on your own or take the computer in for analysis to a local professional computer repair shop. If you are in the northeast Kansas area, let me know and I will gladly help you through my computer store.
You use your keyboard by typing.
There are some excellent resources for kids learning keyboard typing. Some include programs such as: Software 2013, Keyboard Typing for Kids or free programs at Free Typing Games dot net.
Touch typing refers to being able to type without looking at the keyboard. Touch typing also includes the use of all of one's fingers on the keyboard, as opposed to hen pecking which is typically typing with the two index figures while looking at the keyboard.
A virtual keyboard differs from a touch typing keyboard because a virtual keyboard is on touch sensitive screen (like on the iphone) rather a hardware keyboard that some people prefer.
typing
Typing letters.
Typing letters.
It is called a keyboard.
ergonomically design keyboard.
By typing it via keyboard
:v
Srilipi is the best Telugu typing keyboard.