bash vs. bourne vs. tsch vs. ???

[skunkbad]

I'd very interested in linux shell scripting, and wonder how essential it is to know one, two, three or more different shell scripting languages. So far I have been playing around with bash only. I understand that bourne scripts will work in bash, but not necessarily vice versa. tcsh seems very appealing, but I don't know C, and tcsh isn't exactly C, but some variation of C??? I'm preparing myself for setting up a web server, and want to educate myself as much as necessary.