re: What is the trial version? What it does not include or how long it work?
As far as I know, the Platinum trial is a fully functioning version of the program; though it's only for a 15 day period. There is a list of commands in the Wiki, V20 Comparison Chart
, that shows what tools are in the various editions. Platinum (or "Pro Platinum") has all the tools.
There is a "Pro Basic" edition that has a few less tools or options for tools (such as no Bending tools and fewer Architectural options), but I would recommend that you get the Platinum edition.
Designer, Deluxe, (Professional, Expert, Basic), Platinum
Windows 10 Pro (1803), 64-bit