1. There is no premine, Wisp is a fork of Spectrecoin which has existed since 2016.
2. There is no airdrop or bounty at the moment.
3. Currently only by buying it from individual members of our community. As soon as we are listed on Bisq or some other exchange, you will be able to buy coins there. If you are interested in buying coins please come to our Discord and ask about it. Maybe we will make a dedicated Discord channel or Bitcointalk thread for OTC trading if enough people are interested in that.