Help/Help

This menu item opens the help file (this file) at its default page.

You might see the following dialog instead:

which means that you haven't yet installed the help file.  Click on the link in the dialog to open your browser at the Explorer++ download page, and download the file (Explorer++ Help.chm) using the Help File link.  It may be in an archived (i.e. zip file) format; if that is the case, extract it first, then follow the next steps:

As of the current version of Explorer++, (context sensitive) help using the F1 hotkey is not implemented.  Only the Help menu item is functional.