ERP has been growing more and more popular for the last years. Here are some cool and informative sites, that I have found recently, browsing around the Internet. They are all about ERP software and more specifically about its basics:
http://whatiserp.eu – the very basics about ERP software. If you haven’t heard about enterprise resource planning, this would be a good place to start reading about that matter.
http://en.wikipedia.org/wiki/Enterprise_resource_planning – all about ERP on the most popular and cool free encyclopedia – Wikipedia.
Opensource ERP and CRM
http://en.wikipedia.org/wiki/List_of_ERP_software_packages – here is a good list with some nice opensource ERP solutions. This means that they are free. Some of them are world class solutions, so don’t hesitate, have a look at them.