Lightning Transactions is the solution to bitcoin's problem, high fees and transaction time - the reason why bitcoin isn't used everywere so far.
But not for long since LT is going live in a few months. Today, you can test it yourself and learn every little dirty detail about it.
This is going to skyrocket bitcoin to the moon.
Here are the links
https://htlc.me/ - Lightning test web site _ Test it and taste it !
https://www.reddit.com/r/Bitcoin/comments/7kv04t/you_can_try_a_testnet_bitcoin_lightning/ - Instruction about how to do it and info about the lightning network
First test payment was done only for the second try and since then I can't send any payment... OK I know that this is just a test environment. Anyway, the first payment was really fast and it was easy to pay thanks to the provided instructions. I hope that this will go live soon, bitcoin really needs something to speed up the small transactions. I know that LN is not decentralized, but I think most of the average people won't care about centralization or decentralization if it's only about small payments