One way to invest in the Lightning Network is to buy and hold Bitcoin. The more people that buy and hold bitcoin the more demand there will be for the Lightning Network. The second way is to run a lighting node and the danger is you could earn very little in fees.What is the Bitcoin Lightning Network?
The Lightning Network is a proposed system built on top of Bitcoin that would let people instantaneously send/receive payments and reduce transaction fees by keeping them off the main network.What is a Lightning Network?
Lightning Network is a decentralized Blockchain using smart contracts functionality to enable instant payments across a network of participants. It allows bitcoin transactions to occur instantly without any delay in block confirmation times (verification process for peer-to-peer payments).