For the moment it is only test Mining. At 7PM UTC time it goes live for main net mining.
How to mine Bitcoin Gold
Step 1:
https://minepool.gold/getting_started
Go there and download the miner for AMD or Nvidia
Step 2:
config text is below but is only to test if it is properly working.
miner --server eu.pool.gold --user mfgHzvRWk7kgcVKEiRbVVD3WcAdtiaaeni--pass x --port 3044
Step 3:
Real mining starts at 7PM UTC 11/1/17
The discussion right now is people are scattering to find a working wallet to use. If you get any please post in the comments. I will do the same as this is a bit chaotic so a collaboration is always best. Hope this helps
Update: it is being delayed as issues are occurring. I wouldn't suggest mining it