Have you selected "show all" from the icons menu?
If not, you won't see anything on the disk unless it has an Icon file (.info)
Another way is to select view as text rather than icons.
BTW, with the LHA .run file, you'll have to run it from shell to extract the LHA program files.
Then, put the executable in the C directory of your Workbench and grab a program like Packmaster off Aminet in order to give yourself a nice GUI for de-archiving.
Alternatively, grab my
Classic 3.0 WB that has everything already set up.
Or the wonderful "Amiga in a Box". Do a search on the net.