Part way into installing Piwik: 500 Server Error

So I extracted the file into my site and went to -&nbspThis website is for sale! -&nbspmywebsite Resources and Information.

and I got this error

500 Server Error
A misconfiguration on the server caused a hiccup. Check the server logs, fix the problem, then try again.

What do I do?

I followed this video tutorial: How To Easily Install and Setup PIWIK Analytics - Step by Step

Check your server error logs for more info ?

I’ve never checked server logs, how do I do that?

ask your web host for the error log