Happy to hear you're enjoying Mint, and thanks for letting us know how you're getting on
Sometimes it can be difficult to talk at all about computers without using what some would consider "geek jargon", but talk to a mechanic and he won't say "replace the rubber loop thingy on the roundish electrical looking thing under the left side of the big lump of metal (that may or may not also go round a fan) under the hood", he'll say "replace the fanbelt" with the assumption that if that's gibberish to you, and you can't be bothered to do a little terminology homework you probably shouldn't be replacing it in the first place.
It's one thing to "show" a trainee in a show-and-tell kind of way where he'll pick up the jargon along the way .. it's another entirely to type up text instructions without using jargon, and expect it to be crystal clear, precise, and leave no room for user "interpretation"
(believe me, there's nothing more frustrating than someone who "thinks" he understands where your instructions are going, so forges ahead only to cause more damage)
Technical terminology IS English .. just not English that Joe Average understands, or wants to .. I wouldn't expect a brain surgeon to document his work so a layman could understand it, they're generally not the target audience, but where they were he'd still have to use the technical terminology for brain regions and tools, or dumb it down so much it's no longer informative and precise enough to actually be used as any kind of tutorial.
If you're talking about the use of the command line in online tutorials, etc. .. there are good reasons for that -
1) it's shorter than typing instructions for a GUI method for achieving the same result
2) *most* commands tend to work across different Linux distributions .. GUI instructions may not (different desktop's etc)
3) commands leave no room for "interpretation" by the person being instructed.
4) they can be copy/pasted directly into a terminal
The command line in Linux is an extremely powerful tool .. it would be a pity (and occasionally impossible) not to use it