I am not sure if this is where I should be asking this, but I am almost totally
lost as to what I am supposed to be doing, and the instructions seem to be
assuming that I know a lot that I do not know.

I am trying to set up whatever I am supposed to set up get Yahoo to read the
sitemaps on my Wordpress blogs on my sites. I am using Google XML Sitemaps
plugin with the link provided through which I am supposed to obtain a "key" that
I need from Yahoo. The link provided with the Wordpress plugin takes me to the
form for "Developer Registration", but I still have little idea as to what I am
supposed to do.

Here is one of my blogs for an example:
http://name.reslight.net/

I do not know what is the difference between Generic and Browser-Based
Authentication and don't know which I should choose.

I do not know what is the end point URL is that I am supposed to supply; where I
am supposed to get this URL from?

Ron