General :: Archiving Bash - Script In VIM ?

I'm relatively new to Linux in general but have learned to do the basics with the CLI.

Well my main problem is writing my first "real" script in VIM. I just have no idea where to start. I was hoping you guys could point me in the right direction.

Well this is what the script needs to do.

"As the IT administrator for a large manufacturing company you have been tasked with producing a script for archiving the daily log files. Each week the daily log files are placed in a directory named weekXX, where XX is the number of the week. Each week directory should be archived and compressed and stored in a folder called log_directories. When the script has completed the task it should display on the monitor exactly what files and directories it has archived.

The script should be started by a user with the required week numbers added as arguments (e.g prog 13 14 15 should start the program and archive the daily log files in week13, week14 and week15).

A basic manual is required, showing how to start the program, the hardware and / or software requirements, a hard copy of the script and a brief description of the test strategy and test data."