Unix Covering Letter Learning Unix Shell Scripting?

Learning unix shell scripting? - unix covering letter

I have the programming in Unix shell scripts and get funky **** with Unix for this class as I did. The problem is that everyone in my class used to make these things in their spare time for fun, but all new to me. Are there any sites that all you for half the length of the academic unit of the simple **** is like "What the Shell Scripting