There is a community subreddit, initiated and moderated by Jacques van der Merwe. I come there too and answer questions and post updates.
Thanks to redditor /u/Parvifolium, there is also a Whitehack discord channel, which now has a Suldokar’s Wake sub-channel. You can find it here: https://discord.gg/Tn3PaSsAY7
I wrote a few simple, web-based tools which you can use to play the game. You can find them here: suldokar.com.
High-res pngs (without grid) for the maps in The Relay Hack (introductory adventure)
Thanks to redditor /u/MysteryHand, there are great alternative character sheets as well as Gunta cards available as printable PDFs here.
Using Whitehack to Play the Setting in Suldokar’s Wake
This was previously a longer section about using the single issues with Whitehack. Since then, Whitehack Third Edition has been published and has all the tools you need to run a Zira-Kaan campaign.
If you want to swap game mechanisms between the games, you can do so quite easily with a bit of ingenuity. Ask in the sub-reddit if you run into trouble!