Q: Where can I find the version of used Valentina engine?
Using menu HELP → PLUGINS open window about plugins. In the line of “Valentina 3.x File Plugin” you can see “Valentina Engine version:3.6”. Sometimes you should increase the width of window to see the version.
Q: Does some tutorial on how to install Valentina Studio on my OS exist?
Yes. We have quite many videos that show in few minutes, how to download Valentina Studio and install it. Check please Valentina Studio Videos