For the Linux newbie from a noob
Scenario: You have quite a large number of zip files in a folder with other files and would like to avoid manual labor of extracting one file at a time.
The below graphic is the result of extracting an e-book downloaded from the web in compressed format.

Solution: A simple shell script to extract all files at one go.
Save the script with a .sh extension and make sure it resides in the same directory as the compressed files.
Fire up the terminal, cd to the target directory and execute the script using ./xxxx.sh
P.S.: Has been successfully tested on Ubuntu