What is computational thinking?

(, urgent need): how do i change my username

Each time you save a document, you will need to type in the file type in which it should be saved you can select the save button to save it with the same file name if it has been previously saved you will need to select the location to save the file you will need to use the save as dialog box

Does anybody know how to hack into a google account? i had important information on it and it is gone now and i need getting it back.