Ok, once you have the HD formatted, you need to boot from the WB floppy disk, open it and go into the shell.
Then say:
copy sys: dh0: all clone
of course replace dh0: with the label or devicename of your hard disk.
You can then reboot and copy the extras disk over,
copy df0: sys: all clone
(a reboot is a good idea, because then the copy command will be loaded from the HD. You can of course assign C: to dh0:c any time, but a reboot is easier here if you're new to Amigas)
PS. Drag 'n drop installing isn't as common outside the Mac world as you might imagine.
Many Amiga software is installable with a drag 'n drop, but many times you need to at least copy a few libraries by hand if you don't want to use installers.
OS2.0 and forward lets you view the iconless files as well on the disk, so you can also drag 'n drop install the OS if you really insist. ;-) It's best to use an installer, though, with the newer AmigaOS versions.
[edit: seems I'm a bit late, but my instructions don't have typographical or factual errors in them! ;-)]