I have been doing this now and then for a long time, but resources on the 
web are always changing and there may be lots of good new stuff.  The 
thing is, there's always so much out there that it's hard to decide which 
things to use.

I'll be teaching a group of grad students how to use our Linux server next 
Tuesday.  I always start by showing the basic commands like ls, rm, mkdir, 
etc.  The best thing would be to minimize class time dedicated to that 
kind of thing and give them something nice on the web that will show them 
a lot of the most useful things people do from the command prompt. 
There's so much to know and it's hard to decide where to start and where 
to end.  So I'd like to give them something they can use to go much 
farther on their own, for those who want to do that.

It would be great to hear from you guys if you have some ideas about good 
web resources for training Linux users (all using Bash shell).  Thanks.

Mike