Unix Tutorials (?)

[Karl Stiefvater]

Hi.

I'm trying to assemble a packet of tutorial texts for the ins/outs of the
Unix world.  Explanations of sockets/shared memory regions/how mail
works/administration... etc.  Basically, anything of interest which isn't
fleshed out in the man pages would be ideal.

I'd be indebted forever to anyone who could help me out.  If you have any
such files, or know of their existence, could you drop me a line?

Thanks in advance,

-Karl