I have no idea how I can add RSS to my site and what I need to be carefull. Are there any scripts or is better to code it on my own, what do I need to put? Thank you!
if you have a blog, then most likely you already have rss setup and all you need to do is to add the widget. if you have a site, then you will need to generate a custom rss file, upload the file to your server, and use the feed url on the footer or site navigation. you can just hand code the rss file, do some search on google and you will find out how
If you are developing your site in PHP you can find a lot of scripts to generate RSS feeds in phpclasses.org