Use this contact form to leave a message about anything. (You could also use the Give Feedback about a story form; goes to the same place!). A few of the web posts on this site already allow visitors to make comments. If for any reason you want to send an attachment, let me know, and I can provide an email (which you can also find inside the ebook). Generally, if you are seeking permission to reproduce a story from the ebook, check this web page.
I can’t promise that I’ll respond, but I definitely do read all comments send through the online form.