URL - Also known as the 'web page address', you can find it in the search/address bar of your browser ie http:www.weebly.com
Domain Name - this is found within the URL, if we use the above example the domain name is "weebly.com".
Link - links take us from one web site to another (external) or from page to page within the same web site (internal)
ie internal - from leobirch.com to leobirch.com/events
ie external - from leobirch.com to mailchimp.com
To be continued...