Yes. Great method. Play a different game to learn what you need for this game. ... Oh, and that game that you have to play as a tutorial happens to be free-to-pay and it requires Galaxy...
Makes one wonder. Is the missing manual just another screw-up from GOG? Or is it another desperate attempt at pushing GWENT?

I wouldn't know about desperate considering Gwent MT's apparently were a huge sum of GOG's income but this does seem to be their start into offering games exclusively on GOG/Galaxy since they didn't release it on Steam anymore contrary to what was originally claimed