Bitcoin 101 provides an overview of Bitcoin, including: - Bitcoin functions like cash online through a decentralized network where transactions are recorded on a public blockchain. - Benefits include no inflation, fast/free transactions, anonymity (to an extent), and security through mathematics. Risks include volatility, irreversibility, and difficulty recovering stolen coins. - The Bitcoin network consists of nodes that validate transactions and add them to the public blockchain through mining, which incentivizes this process and controls coin production. - A wallet contains a public address and private key to send/receive coins, while transactions are broadcast across the network and confirmed through mining into blocks roughly every 10 minutes.