Here is a collection of the key terms regularly used in Moodle. Best to learn them now. It will assist your future learning a use of Moodle. One can't learn the concepts without first understanding the words.
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Human Interface Guidelines
See the wikipedia article.
Any computer on a network that offers services or connectivity to other computers on the network. A host has an IP address associated with it.
A business that will host your web site for a monthly fee. You provide a domain name that you own, and after they've set it up for you, you can copy your files to their server and set up your site.
Abbreviation for Hope That Helps (or Hope This Helps).
Originally from Usenet, but now appearing in emails and forums, it's sometimes put at the end of a reply which suggests a possible solution to a problem.
HyperText Markup Language - a language used to create web pages.