Step 1: Download the file via download butoon or wget command from the terminal.If you are using wget make sure to replace /path/to/dir/ with the directory path in which you want to save the file.
Step 2: Extract the Files.
Step 3: Open Terminal and type following command.
cd /dir/where/it/is/saved/shell/
Make sure while Typing Command you Replace /dir/where/it/is/saved/ with your directory location where you have extracted the files
Step 4: Type following command to eneter into zam shell
./shell
Step 5: Now You Have Entered ZAM Shell. To clear terminal screen for clean coding call zls() or zlear() function