I'm not sure if I mention it in the pdf text itself but there's a few different resources you can use.
- Here's an overview of general Rider-Waite decks: https://www.tarot.com/tarot/decks/rider
- Most apps will let you do three card draws and also have meanings with them. I suggest the Golden Thread app, as it also has a lookup. https://goldenthreadtarot.com/
- Your deck probably came with a booklet (or maybe a pdf) that has meanings more specific to its designs and inspirations. That one is probably your best bet.
I don't have a specific guide or a deck specifically for this game though. Hope that helps!