SQL Issues

I am trying to adapt an SQL report previously created, and I keep getting errors that I don't understand.  The first has to do with trying to use WHERE (multiple columns) IN ... it comes up as an error.  See image of code then error.

The second error comes from trying to use the WITH name AS ...

Lastly, I use the date in the image above to limit the range of results while working, but when I use the date as show above (WHERE start_date > '2018-01-01'), I get an error unless I include a space in front of 2018... is that usual?