The Release Notes and Getting Started Guide for LunarG's Vulkan SDK is located online at: https://vulkan.lunarg.com/doc/sdk

Release Notes: https://vulkan.lunarg.com/doc/sdk/1.3.243.0/linux/release_notes.html

Getting Started Guide: https://vulkan.lunarg.com/doc/sdk/1.3.243.0/linux/getting_started.html