Better step-by-step instructions for using `cel-key`

[nuke-web3]

On getting started, I don't want to blindly use a random key that I am not sure how to backup and recover from (even for testnet funds from a faucet).

https://docs.celestia.org/how-to-guides/quick-start#key-management-with-cel-key suggests you can manage keys better with cel-key but there is no instructions as to how to manage the key that celestia state account-address reports.

# Already synced a bit, no $TRUSTED_HASH needed as it's in config IIUC
$ celestia light start --p2p.network mocha --core.ip rpc-mocha.pops.one

# Another term
# celestia state account-address
{
  "result": "celestia1r4...4fn9"
}

https://docs.celestia.org/tutorials/celestia-node-key#view-all-options-for-cel-key plus too mich time fiddling to figure out the incantation... I am able to see this works

# In ~/.celestia-light-mocha-4/keys/keyring-test there are some entries, but are cryptic! Not sure what they mean...
$ cel-key list --keyring-backend test --node.type light --p2p.network mocha-4
using directory:  ~/.celestia-light-mocha-4/keys
- address: celestia1r4...4fn9
  name: my_celes_key
  pubkey: '{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"AuBok...a/XD"}'
  type: local

I would love to see more docs with common workflows for interacting with various networks with cel-key, unclear if this is the common tool to use more than basic experiments though so likely not worth the effort? 🤷