One slot lasts approximately 6 seconds.
One Epoch has 2400 slots, approximately 4 hours
One Era consists of six epochs and lasts around 24 hours.
To nominate your Polkadot (DOT) you will have to vote up to 16 validators.
Starting from the 6th epoch, these validators will go through an election process where the ones selected will become part of the active validator set. IE these validators will be elected to validate next era's blocks. In the following era after the election, active validators will be responsible to validate blocks and will receive rewards for doing so. They will then distribute those rewards to their nominators in the subsequent era.
For more information on staking Polkadot (DOT) with P2P Validator and our special offer for large DOT delegations, visit https://p2p.org/polkadot.
For additional staking support, visit the P2P Polkadot support center.
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