P.S.
If your browser error page doesn’t give you a link you can click to go to the “not secure” website anyway, there’s a way to get past that.
In the Internet Properties Advanced tab, down in the Security section, you can UNCHECK a couple of boxes that will tell your browser you really don’t care all that much about SSL certificates.
“Check for publisher’s certificate revocation”
and
“Check for server certificate revocation”
After doing your doctoring, “Apply” and “OK” to exit.
What he said.
Also, sometimes you go to an unprotected site, like http://www.freerepublic.com, and it redirects you to a secure site like https://freerepublic.com. If you see a locked padlock icon in the URL window, you’re at a site that needs its certificate.