Voting
The NNS DAO is an open governance system where anyone can become a participant by staking some ICP in a neuron. At least 1 ICP is required to create a neuron.
Locking tokens for a period of time is known as the neuron's dissolve delay. If a neuron has more than 6 months dissolve delay, it is eligible to participate in voting. This means that it can both submit and vote on proposals.
Finding proposals and discussions
You can see all the NNS proposals on the Internet Computer dashboard or on the NNS dapp. Voters can freely discuss proposals anywhere they like. Many NNS proposals are discussed on the developer forum.
Direct voting
When a user has an eligible neuron and would like to vote on an open proposal, one option is to directly vote to adopt or reject the proposal. Currently, the most user-friendly way to first find and vote on open proposals is via the NNS dapp: https://nns.ic0.app/.
For more information how a user can set up their neuron to delegate its voting power using liquid democracy, refer to following.