I tried the first posting (EASY) and was able to do that without any problem.
I was able to register with Wikipedia, and I got into the editing section of the Sacred Heart site, but I did not make any additions. I was afraid that I would make a mistake or add something that was not correct, so I thought I best leave it alone.
The information window that is on the right hand side of the page is overwhelming when you try to edit that. YIKES. I had no ideas what I was doing.
I did not try to edit a different Wikipedia site.