how do you find how many hours are on this unit?

Hold down the test button to get into service man mode. Use the page button to get to the last page where there is an hour counter option.

You log onto Curt's website, download, and read the manual. Trust me - there are a great many fundamental things you need to know about how to set up and use your projector and they are in the manual.

I second that...

In time you'll end up memorizing everything like the rest of us lol.

I think it's on pages 50-54 in the manual;)