One of the menus will have an Execute option. Select it. Type newcli. That should give you a shell. Try typing memacs. If it loads, you have a variation of microemacs. Now quit.
Type 'dir', this will give you a listing of the files in the current directory. Type in the name of a directory to change to it. Typing "c:" will change to the commands directory. Anything which comes before a colon is a device or an assign. It acts a bit like a drive in other operating systems in that it serves as a root directory. It also acts a bit like a ?PATH environment variable in Unix systems, in that you can define it yourself and you can combine paths. Neat, eh? Inside of drives or aliases, directories are separated by forward slashes (ie. '/'). Oh, and '/' has the same meaning as '..' in DOS and Unix. So:
DH0:A/B is the file or directory B in the subdirectory A or the device or assign DH0: (which is a common name for hard drive devices).
If you are in DH0:A/B, then '/' would leave you in DH0:A and '//' would leave you in DH0:.
The problem with viewing things in the workbench is that the workbench only shows .info files by default. You can view non-.info files as well, but I have found that you have to turn it on on a directory by directory basis. Besides, there are a few really nice things about the shell. :-D