I have a Truebit Verifier running on the Ethereum mainnet right now -- having some problems registering an IPFS node, but otherwise it's functional. The process is pretty straight forward, though you may need to start over a few times to wrap your head around it. To get started right now, you just need a GitHub account and fill out the form at the bottom of
Truebit
You should get an invite for the Truebit OS GitHub repo, which has a huge walkthrough on how to set everything up. There's a couple of things they don't mention that are super helpful, imo. For the Goerli stuff, create two new accounts so that you can run a Solver and a Verifier, you'll need about .6 eth in the Solver account and .2ish eth in the Verifier account. With both a Solver and a Verifier running, you'll be able to run a Task and watch the system work like you see in the previous screenshots. When you super fuckup and want to start over, running "docker stop /truebit" is a huge boon, and it's not mentioned anywhere. Other than that, just follow the walkthrough.
I'm not sure ultimately what the best rig setup is for this. For now, running it as a container on my Windows machine seems fine, but there are options to set about how many simultaneous tasks you want to solve/verify so I'm sure there's more to explore on those terms. Going to work on registering the ipfs node (should help task routing to my machine) and set up funds for the solver. If I see any tasks run through, I'm sure I'll post a screenshot like a total nerd.