You can get started for free at http://getgala.co.uk
If you’ve got Gala Coins (also known as Gala Tokens) that you’ve earned from a Founders Node or from gameplay, then they will probably be on the GalaChain.
The Gala Chain should be going live in Q1 of 2022, but until then everything is operating on the Ethereum blockchain.
This video shows you how to convert your Gala Coin to a Gala Coin on the Ethereum blockchain.
Once your coin is on ETH, you can transfer it to an exchange of your choice or use it to buy things in the Gala Games store.
I hope this has been of use, please check out the other videos in this series.