When joining a new network, you may have the issue of not having enough of the native token to pay for gas fees on your first transaction. Some blockchains use faucets to provide these. On Avalanche, you obtain these funds by bridging over $75 worth of assets on Core.app/bridge (the official bridge) to the Avalanche network. When you do this, you will be airdropped AVAX to help facilitate your first transaction. You do not receive an airdrop of AVAX for transaction fees if you are bridging from the Avalanche network to the Bitcoin or Ethereum networks.
For more developer info on the faucet, click here.