FAQ: https://docs.google.com/document/d/1XR3vL2p4QV0wC7FrlC8eN-q62BqNFTFElbj21wEmMGg/edit?tab=t.tyioldyxov9u#heading=h.djcvpj2dqgyq
Balances FAQ - https://forum.polkadot.network/t/asset-hub-migration-balances-faq/14561
Staking FAQ - https://forum.polkadot.network/t/asset-hub-migration-staking-faq/14559

Update:
https://wiki.polkadot.com/learn/learn-staking/

https://wiki.polkadot.com/learn/learn-staking-advanced/

https://wiki.polkadot.com/learn/learn-account-balances/

Important:

• Fast unstake decommissioned
• Post-AHM you must claim your staking rewards from Asset Hub.
• check if any validators pages need to be updated - Session keys must be set by the stash account, and not the controller.