ANY GOOD USER'S GUIDE ONLINE?? (with simple examples)

I am trying to get started with Postgres but it ain't easy. The
documentation, although it may be thorough and very exhaustive, doesn't
have much of practical value in it. I looked in a FAQ which came with
the download -- again, not much useful there unless you wanted to write a
dissertation. Then I found a 'User's Guide' and thought, "Of course, I
have been looking a 'documentation', which, when you think about it, has
done a great job of docmenting, but a 'User's Guide', that's what I've
been looking for!"
Well, it wasn't a real user's guide. I have been able to find useful
items here and there but you have to dig through so much information that
the frustration gets very high.
Like, I am looking for how to insert a timestamp when a record has been
updated. I have found the data type timestamp defined and documented in
documentation, FAQ and 'User's Guide', but nowhere is there an example of
how one would actually insert a timestamp into a record.
Yes, I do have the question of the timestamp, but No that is not my main
question. My main question is this "does there exist a real User's Guide
in postgres-land, with actual examples of how to IMPLEMENT all this
beautifully docmented material?"
Sorry for putting you through this (if you made it this far), but I just
needed to get this out of my system.
Thanks,
Paul

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