Hi all friends. Sorry for my bad English. I am using Google Translate.

My question is this:

I installed a plugin for Chrome called "Refresh Monkey". Monitor websites and warns you when the content changes.

This is a screenshot of the plugin:

As you can see where I marked in red, tells me to receive notices of specific things I need to put "jQuery commands." By giving "jQuery" sends me to this website:

http://api.jquery.com/category/selectors/

Here I appear "command line". I do not know what to do with the "command line". Nor where I have to put them.

What I want you to notify me when eg a web page says "100", to warn me and I select a color when the value of "100" down to "99" or a lower number.

I've been wondering for months in many forums. And no one has given me answers. I think this is the official forum for jQuery, so hopefully I can find the solution here.

Do I have to learn a programming language?

Do I have to learn jQuery from 0?

I hope you may be able to help me or tell me where to start or should I do. I just need to know how to run the plugin, not if I need to learn jQuery from 0.

I hope you do not mind I have asked.

Thank you all in advance for your time and effort.