Futures are a common concept in investing. If you aren't familiar with them, these contracts are essentially long-term commodity orders. By purchasing a futures contract, you agree to take ownership of a commodity at some set date in the future. Futures traders buy contracts when they expect the price to rise, selling their contract at a higher price later without ever taking physical ownership.
Cryptocurrency futures are a new concept and one you might encounter if you're planning to buy bitcoin or another digital currency for the first time.