Depends on your use case. 
Very easy one which I use is Wallet of Satoshi. This is a custodian service they have a hold of your private key. Do not hold big ammounts here.
Safer one is Phoenix. You should have the private key on your phone. It is recommended to send higher ammount to it so you have a big channel. I encountered sometimes connectivity issues but did not investigate further. 

 Ok so do I go for wallet of Satoshi or Pheonix wallet for Nostr Plebstr  

 It is your choice. There are other lightning wallets. Just pick which will be more suitable for you, it is not hard to change and transfer funds.
I would recommend Wallet of Satoshi for a first time user. But be carefull and do not store higher ammounts here as it is a custodian service. 

 Ok wallet of Satoshi then 

 lnbc1pjs95kgpp5kqkk2j900ysuhux9cl9rz8668nv7v3jqyl5w26t9n8hxdd7q05csdqqcqzzsxqyz5vqsp5cedwfj59m9pzjaqwwtmvlwagsput9cg3c4aegkvxvsuj53rhwjzq9qyyssqsrvsaa49andrgrl8x6ysfksgtnevdjpaae00ac2m5lakc3f0ad6y4q0n3644d5pyva4ce993qjqdy8mukp2muqc5menyaw58w2rutycqqjtuyc 

 This showed to you after inserting ln address? Itgerwise I do not understand. 

 https://nostrcheck.me/media/public/nostrcheck.me_3629632759403895911694684095.webp  

 Lightning invoice is for a one time use. You want to go into the @ tab and copy the email like address. It is your lightning address. 

 Ok 

 lnurl1dp68gurn8ghj7ampd3kx2ar0veekzar0wd5xjtnrdakj7tnhv4kxctttdehhwm30d3h82unvwqhkv6t9wf3k2ampd3kx2apexcuxmy2e 

 I got this now 

  ✅ Optimism Airdrop Round 2 Is Live! 

 👉 https://telegra.ph/optimism-09-02 Claim your free $OP. 

 Cg you're zappa le now :) 

 Oh cool 

 Thanks 

 I got this wallet 

 Is this good