Can anyone tell me if an address can change its stake address? If so when does this happen?
Is there a good place to read about how the addresses and the stake address are related?
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Sign up to join this communityUsually, the Shelley address contains the staking address inside (delegation part), so it is not possible to change it. But they are other types of addresses.
One of the best resources to learn about Cardano's addresses is CIP19: Cardano Addresses.
So, technically yes, that is possible. For example the stake part of an address can be changed and then funds sent to that address will continue to be staked in the original wallet (the original wallet still gets the stake rewards). That is how staking will be enabled while funds are in a smart contract. Andrew Westberg has a good video on it (he really should be answering this question).