Talk about the lightning network is not widespread on Bitcointalk, try Reddit.
Follow this topic and will find answers to all your questions
https://www.reddit.com/r/Bitcoin/comments/7pwna9/lightning_network_megathread/Yes, I also recommend this site.
Lightning technology is under development and its use is dangerous unless you know how to use it.
- You can also follow up my topic about [LN wallets & services], I will try to make it up to date as possible
https://bitcointalk.org/index.php?topic=3315816.msg34624467#msg34624467