Developer support: 

• Dev Forum
• Lisk.chat

Documentation:

• Lisk Documentation 
• Introduction to Lisk SDK
  • Video 
• Lisk SDK 5.1.0 
  • Video
• NFT tutorial
  • Written tutorial
• SRS tutorial: 
  • Written tutorial
  • Video tutorial
• Lisk Name Service tutorial:
  • Video tutorial

Example blockchain applications:

• Develop a blockchain application with Lisk SDK 5.1.0
• Lisk SDK examples
• Lisker blockchain application
• Lisk Ticketing Chain
• Lisk apps overview

Custom plugins and modules:

• Lisk IPFS 
  • Plugin: https://github.com/Lemii/lisk-ipfs-plugin 
  • Demo: https://github.com/Lemii/ipfs-demo 
• Lisk Sprinkler 
  • Module: https://github.com/Moosty/lisk-sprinkler

Other links: 

• Lisk Service
• Lisk YouTube official channel