There are several tutorials:

1. Using TOR (Slow) - https://raspibolt.org/guide/lightning/mobile-app.html#install-the-zeus-app

2. Using LNBits (Fast, need Clearnet Domain) - https://docs.zeusln.app/for-users/connecting-zeus/connect-lndhub#connect-a-lnbits-account

3. Using LNC (Fast, no need Clearnet Domain) - https://docs.zeusln.app/for-users/connecting-zeus/connect-umbrel#using-lightning-node-connect