Could you perhaps guide me through what I'd need to do?
There are thousands and thousands of topics here on this forum, people asked the same questions many times, and solo mining topic is no different. Just google "solo mining how to", it's the same for most coins, including bitcoin and x11. Basically you sync the wallet, then close it, create a .conf file with at least 3 lines in it:
server=1
rpcuser=*name*
rpcpassword=*password*
Restart the wallet and point your miners to the machine you're running the wallet on. Repeating the same stuff in detail over and over again is tiresome and pointless, spend a couple of minutes googling it instead.
I can't seen to find anything relating to solo mining X11 that is recent.
Maybe because it makes no sense for most of today's x11 coins? The hashrates are huge, plenty of reliable pools with low fees, why would you solo mine?