Neil,

When you find a tutorial that works for you, pay particular attention to these commands"
ls = lists the contents of a directoryy
pwd = tells you the name of the directory you are in
cp = copies a file
mv = moves a file
cd = changes to a new directory.
rm = removes a file
df = how much disk space is left
If you are going to mess about with the command line (it's good for you!) then you will need to know the switches and arguments to use with those.

You will definitely need to know
ls -l
ls -a
ls -R
rm -i
df -h

With that lot you will be able to do most of what you want.

later on you'll start thinking about tar, and ps, and it is all downhill from there!

Zebee