The Lighting network will allow owners of Bitcoin to be able to make payments through a layer two of transaction allowing high volume and lower fees then current transactions.
The problems below are preventing Bitcoin to scale and the lighting network coming online in 2018 will resolve the issues below
Problem 1: Scalability : Limited amount of tranactions can process per sec
Problem 2: Time delay: Blocks are created every ten minutes to verify transactions
Problem 3: Fees : High fees for transferring Bitcoins
Abstracting Complexity for new users.