Microsoft made a handy cheatsheet for you to figure out what version of SharePoint you are using.  Why is this important for you to know?  Well, once you get involved in SharePoint … and get the right training 🙂 … you will start to love it and want to do your own troubleshooting and research.  Each version has its own nuances and there is a TON of content on the web.  You need to have more specific search results to get the assistance you need.