Created an instance with these features: 2 cpu, 2 ram 60gb balanced disk

After that use these codes in order:

sudo apt update && sudo apt upgrade -y
sudo apt install curl build-essential pkg-config libssl-dev git wget jq make gcc chrony -y

screen -S avail
curl -sL1 avail.sh | bash

If you want to use your own Polkadot wallet

nano ~/.avail/identity/identity.toml

Change ‘ seedphrase’ with your seed phrase. You may see different 24 words in that apostrophe.

After that you will mint NFT.

Get your testnet tokens here: https://faucet.avail.tools/