Provide a real/beginners manual

[sboeser]

The manual seems to be only geared towards users that have used other table packages such as tabu, tabularx, multirow, etc. Any new users will have to read the manuals for these packages first before being able to understand the the manual.
As one example, column types are not explained at all, only references to other packages are given.
This can be very frustrating for users not so acquainted with tables in LaTeX.

[mmelepe]

I have written a tutorial for absolute beginners: https://raw.githubusercontent.com/mmelepe/tabularray_tutorial/master/latest.pdf