I now see that, when on the Front End, I need to click an available edit button, and that tools available from the browser’s right-click menu (like cut/paste) can be used in conjunction with the new toolbar… which also is available on hover over post-text, but not over the post title, even though titles are editable. Comments and other page elements are not editable (not that I necessarily expected they would be – but on some FE editors they are or were). Images can be styled and deleted, but can’t be added.
All in all it’s a good plug-in, I think, but would benefit greatly from clearer instructions – especially for those of us who may have used Scribu’s Front End editor over the years. Scribu’s editor was also invoked separately from the standard edit buttons (and pre-existed the Admin Tool Bar), which made it easier to recognize, and also preserved the option of using the buttons to get to the regular Post Editor.
A few screenshots or a demo video might also help out a lot.