There will be giveaways on the Gods On Chain twitter account. So to start you should go follow that. Then you should write good quality Gods Unchained content in this community. On top of that read posts from other creators and leave meaningful comments. So for example you see somebody post about a War deck. You could leave a comment about what cards you might use, or ask them questions of why they made their choices. This counts as on Chain activity and will give you credit towards the giveaways.