If you are using IE, you might encounter a problem that has come up a few times. In author mode, the links for adding new elements appear, but the links for editing existing content (the gear icons) do not, as you can see here:
To try to fix this, change the URL of the page that you are looking at from https://[URL] to http://[URL] (in other words just remove the “S” after the http. When we do this, the controls show up:
We will get this resolved so that it doesn’t matter which address you use, but until then this workaround should help.