Unlike many of us here, I started with UNIX a bit later, at Naval Postgraduate School, in the mid '80s. It was a relatively early BSD, and I didn't learn it much except to know that I wanted to understand it better, but didn't have time. Mostly I had to write C programs.
Just a bit later I had the opportunity to purchase and run Microport SysV/AT on 286 hardware, and was an immediate convert. I continued using Microport systems through SVR4. Like others, I found the manuals' thickness and terseness a turn-off until I bought a book.
I think it was "Introducing the UNIX System" by Henry McGilton and Rachel Morgan (I still have my copy). A little over 500 pages of UNIX goodness that taught me all the basics. My experience was that once you know the basic commands you need for day to day life in UNIX, the manuals become very helpful. If you can work with sh, ls, awk, find, grep, ps, an editor, and a few others, the manuals supplement that knowledge with everything else you need. Additionally, the manuals make a little more sense each time you read them. Of course, actually administering a UNIX system without prior knowledge, OJT or a book, using just the manual pages, is next to impossible.
BTW, I still run SVR4/MP here at home on period hardware. It's a joy to use.
Tom
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I agree, and would like to add that Lorinda Cherry’s permuted index of the Unix commands was a perfect
match to those succinct man pages, easing me into the world of all those filters.