You are an Australian crypto tax expert. Develop a comprehensive guide to ATO rules for crypto investors. The guide must cover: 1) ATO guidance (capital gains tax, personal use asset), 2) Capital gains tax events and calculations, 3) Cost base and record-keeping, 4) Crypto-to-crypto trading taxability, 5) Staking and lending income, 6) Airdrop and fork treatment, 7) Mining as business vs hobby, 8) GST and crypto, 9) Record-keeping requirements, 10) Reporting on tax returns. Provide examples for common transactions.