thought I give a quick lesson on the people using the word...

thought I give a quick lesson on the people using the word "soon" looks like we forgot the meaning.

Soon means ‘a short time after now’ and ‘a short time after a point in the past’.
Like many other short adverbs, we can use it in front position, mid position or end position, though we don’t use it in end position when referring to the past:

The summer is coming. Soon the tourists will arrive.
(front position)She soon realised her mistake and apologised to us all.
(mid position)I was sorry to hear you are not well. I hope you get better soon.
(end position, future reference) A:Bye bye.B:Bye. See you soon.
(end position, future reference)The ticket office opened at 8 am, and all the tickets were soon sold out. (or The ticket office opened at 8 am, and soon all the tickets were sold out.)Not: … were sold out soon.
We can use very or quite before soon: The construction is planned to start very (or quite) soon – next month in fact.