From http://www.w3schools.com (Copyright Refsnes Data)
Having an RSS document is not useful if other people cannot reach it.
Now it's time to get your RSS file up on the web. Here are the steps:
1. Name your RSS file. Notice that the file must have an .xml extension.
2. Validate your RSS file (a good validator can be found at http://www.feedvalidator.org).
3. Upload the RSS file to your web directory on your web server.
4. Copy the little orange 
or
button to your web directory.
5. Put the little orange "RSS" or "XML" button on the page where you will
offer RSS to the world (e.g. on your home page). Then add a link to the button
that links to the RSS file. The code will look something like this:
<a href="www.w3schools.com/rss/myfirstrss.xml">
< img src="www.w3schools.com/rss/rss.gif" width="36" height="14">
</a>.
6. Submit your RSS feed to the RSS Feed Directories (you can Google or Yahoo for "RSS Feed Directories"). Note! The URL to your feed is not your home page, it is the URL to your feed, like "http://www.w3schools.com/rss/myfirstrss.xml". Here are some free RSS aggregation services:
7. Register your feed with the major search engines:
8. Update your feed - Now you have registered your RSS feed with Google, Yahoo, and MSN. Now you must make sure that you update your content frequently and that your RSS feed is constantly available.
The best way to ensure your RSS feed works the way you want, is to manage it yourself.
However, this can be very time consuming, especially for pages with lot of updates.
An alternative is to use a third-party automated RSS.
If you don't want to update your RSS feed yourself, there are tools and services that can do it automatically for you, such as:
For users who only need an RSS feed for their personal website, some of the most popular blog (Web Log) managers that offer built-in RSS services are:
From http://www.w3schools.com (Copyright Refsnes Data)