Chain notebooks
Ethereum, from wallet to contract
ETH, network fees and token permissions
Overview
Understand the separation between your wallet, Ethereum and applications. Practice reading fees and token permissions before interacting with a contract.
Learning outcomes
- Separate wallet and network
- Find documented wallet setup
- Budget ETH for fees
- Inspect token identity and allowance
Before you begin
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Progress stays on this device.
Connected readingExplore the Ethereum Bible →
Course syllabus
Three layers, three different jobs
Distinguish a wallet from the network and its apps.
5 min readCreate an unfunded Ethereum wallet
Follow MetaMask's phrase-based setup.
5 min readLeave room for the network fee
Distinguish the asset being sent from its transaction fee.
5 min readA token approval is a permission
Inspect contract identity and allowance before a swap.
5 min read
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