Understand the basics
A blockchain is a shared ledger maintained by multiple participants. Blocks record transactions and a network validates records according to its own rules. Consensus, permissions and security assumptions vary between networks.
Verify before acting
Wallets generally manage the keys used to sign transactions rather than storing assets on a phone. Public addresses receive assets, while private keys authorize transfers.
Build a repeatable process
A confirmation does not guarantee absolute irreversibility. Confirmation counts, finality and network conditions affect risk. A block explorer helps inspect transactions, but its output must be interpreted using the rules of the relevant network.