Learn

Figment: https://learn.figment.io/protocols/tezos

Open Tezos: https://opentezos.com/

Stats and Reports

Tezos Foundation Report: https://tezos.foundation/reports/

Better Call Dev: https://better-call.dev/stats/mainnet/general

TZ Stats: https://tzstats.com/

Tez Block: https://tezblock.io/