Learn crypto, finance & AI.

Read the four guides at the top in order: crypto basics, Bitcoin, wallets, then transfers. They introduce the vocabulary before practical decisions. You can then choose a subject from the library.

A cryptocurrency is a digital asset recorded on a network. A blockchain is a shared record organised into linked blocks. Bitcoin uses a blockchain, but not every blockchain application is a currency.

Bitcoin centres on transferring and recording BTC under its network rules. Ethereum also supports programmable applications called smart contracts; ETH pays for activity on its network. A token issued on Ethereum is not the same asset as ETH.

P2P means peer-to-peer. In a network, computers communicate with other participants. In P2P trading, a buyer trades with another seller, often through a platform. These are different uses of the same term, with different risks.

No. These guides are free to read without a wallet, purchase or account. Start with hypothetical examples and understand custody, fees and risks before deciding whether any real transaction is appropriate for you.

A wallet helps you manage the keys and authorisations used to interact with a blockchain. The network records the assets. With a custodial service, the provider controls the keys; with self-custody, you take responsibility for them.

A recovery phrase can restore control of the accounts derived from that wallet backup. Keep it private: someone who gets it may be able to move your funds. Never put a real phrase into an AI chat or a learning exercise.

Network fees pay for processing transactions under the network’s rules. The cost can depend on demand and the work or space required, rather than just the amount sent. Check the destination network, address and quoted fee before approving a transfer.

No. A dollar-linked stablecoin aims to track the dollar, but its market price can move away from that target. Reserve quality, redemption access and the design of the token matter. “Stable” does not mean risk-free.

x402 lets an online service tell a client that payment is required and describe how to pay, using the HTTP 402 response. A compatible client can submit payment information and request the resource again. Supported networks and tokens depend on the implementation.

On proof-of-work networks such as Bitcoin, mining is the process of competing to produce a valid block using computational work. Accepted blocks add transactions to the chain. Not every cryptocurrency uses mining.

ANTMINER is BITMAIN’s brand of mining hardware. Models are built for particular mining algorithms and have different power and cooling requirements. A machine designed for one algorithm cannot simply mine every coin.

A mining pool coordinates work from multiple miners and distributes rewards under its payout rules. It can reduce the variability of payouts compared with solo mining, but fees, reward methods and payout thresholds differ. It does not guarantee a profit.

Multiply power in kilowatts by operating hours and your price per kilowatt-hour. For example, 3 kW × 24 hours × $0.10/kWh = $7.20 per day. This hypothetical figure excludes cooling, other equipment and additional charges.

No. Revenue is what mining earns before costs. Subtract electricity, pool fees and other running costs, then account for hardware cost and depreciation. Coin prices, mining difficulty and downtime can change the result.

Start with one useful page and a clear brief: who it is for, what it must do and what content it needs. Use AI to help draft and build, then check mobile layout, links, forms and accessibility before publishing.

AI tools can help you produce a prototype, but a working screen is only part of an app. Define what data it stores and who can access it. Test saving, editing, permissions and failure cases before trusting it with real users.

Describe the purpose, audience, subject and required dimensions before generating. Check the result for incorrect text or misleading details. Use real editable text for important labels and export an appropriately sized file rather than a huge image.

No. A live voice conversation is an interactive exchange. Narration generation produces spoken audio from a script. Choose a workflow for your actual output, and check pronunciation, permissions and the exported audio before using it.

Open the original sources, check their dates and independently verify important claims and calculations. For a website or app, test the actual behaviour. Fluent wording, a plausible citation or code that looks correct is not proof that the result works.