Sorry to ask such a basic question.
I have been told that I should set up RSS on one of my websites.
I use Windows 7 64 bit OS; IE 9 & Foxfire also available.

In looking as several posts I don't quite "Get it" as to how this is all working.

Is Awasu reader like a plug in to the browser? A separate tab or window?

With reference to a website: It sounds like the website is a channel which is sent out over the RSS to someone that has visited the site and requested that they receive new information posted on that website or does it send out the whole website and keep it updated?

As you can see I don't have a clear picture of the process.

Thank you in advance for any information you can pass on to me.

You set up RSS feeds on your website that announce the latest changes to your site, new stories, things like that. Your customers then use a program like Awasu to monitor these feeds and read what you've written. Awasu is a stand-alone program, although there are browser plugins that do a similar thing.

The best way to get a handle on how it all works is to install the free version of Awasu, subscribe to a few feeds coming from other websites, and you'll quickly pick it up

Thank you for the suggestion. I'll try it.
Have a wonderful day.

Not at all, RSS can come from anywhere.

I have some feeds coming from places that don't have a web site at all, and through the use of plugins, Awasu can get feeds from anywhere at all e.g. databases or other running programs.

This is a server-side thing and not something that Awasu does.