I downloaded the manual on Steam. Unfortunately, it is only in Spanish. I'm conversant in Spanish - marginally, but no where near good enough to understand deeper concepts. Where can I find the manual in English?

Yeah, don't know why I got the Spanish manual on steam too. Wish I could read/speak Spanish but I can't as of yet so going to need it in English too

Well, ingame we should get the language of the internal browser we use, that use the language of steam I think ? But I think you would have told us if your steam was in spanish, right ?

Ah sorry, to clarify, the in-game encyclopedia is fine. It's the manual under "Additional Content" on the steam launch page that isn't in English, though I have that as my selected language. 

I, too, am looking for the english manual. Tried messing around with the URL steam spits out a bit (https://cdn.akamai.steamstatic.com/steam/apps/1124300/manuals/HKD_STEAM_MAN_SP_V3.pdf?t=1629211786) but none of the obvious things seem to work.

Here it is.

https://cdn.akamai.steamstatic.com/steam/apps/1124300/manuals/HKD_STEAM_MAN_EN_V15.pdf

It definitely wouldn't be obvious to think that the English manual is on version 15 while the Spanish manual is on version 3.