When I ran my site into the W3C Markup Validation Service, there was a "Bad value html" where my "charset=iso8859-1" should be changed to UTF-8. I have no idea what this means or why it presents a problem but I changed it to UTF-8 and the error no longer came up. When I ran it again with all of the metadata, I had accidentally put the entire metadata code after the "head" tag. I didn't realize that the "lang=en" line had to come before the "head" tag, so a floating tag error came up. I went back and rearranged the lines and then the only errors that came up were from the metadata.

The WAVE tool told me had zero errors. There was one alert that there was a redundant link in the Creative Commons License.

The W3C CSS Validation Service congratulated me on having no errors.