I was trying to add a Twitter feed to my site. I put the code in the code I got from twitter into the widget.php file. It didn't work, and I deleted it, but I must have deleted something else as well because the entire site is down now and when I click on appearance - editor - widget.php I get a blank page. That is happening for almost all .php files I click on in the editor.
Please note that I am not a tech person in any way whatsoever. If you respond, please be very, very basic. You can chastise me later for touching the code.
The blog I need help with is www.visualyarn.com.