Summary: What we've covered in the preceding sections.
In the preceding sections you've acquired a vocabulary for talking about the elements of comparative phonology as manifested in Wordcorr -- Wordcorrspeak, we might call it. You have the concepts that define the framework in which Wordcorr operates:
What you don't have yet are the operations at the heart of doing comparative phonology:
There's a reason for not going into them in a tutorial like this one. It's that they are best understood by loading up Wordcorr (details in the Installation tutorial), going to the Wordcorr Web site (wordcorr.org), and trying it yourself, using both the Web site and the Help facility that downloads with Wordcorr itself.