Free guides
Solana, one concept at a time
Each guide condenses one chapter of the Solana Programs books into a page you can read in ten minutes. No signup, no paywall.
Program Derived Addresses, explained
What a Solana PDA is: an address computed from seeds and a program ID, guaranteed off the ed25519 curve. The derivation, the bump, and the Anchor recipe.
Read the guideToken-2022 and token extensions, explained
Why Solana has a second token program, what an extension physically is — TLV bytes on the mint itself — and which classic-token habits Token-2022 retrains.
Read the guideThe Solana account model, explained
Where a Solana program stores its state: accounts, owned by one program, fixed in size, readable by everyone. The three-party creation flow, in Anchor code.
Read the guideWhat is a lamport? Solana's smallest unit
One billionth of a SOL, named for Leslie Lamport. Why the chain counts in integer lamports, how rent prices bytes in them, and the two ways programs move them.
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