Vulkan is a new generation graphics and compute API that provides high-efficiency, cross-platform access to modern GPUs used in a wide variety of devices from PCs and consoles to mobile phones and embedded platforms.
C++ examples
github repository for my open source C++ Vulkan examples. This collection includes over two dozen different examples for windows, linux and also some android examples.
They cover much of Vulkan's functionality and are meant to be a starting point for getting into Vulkan.
Hardware Database
The Vulkan Hardware Database is a developer resource for checking and comparing features, limits, formats, etc. of the available Vulkan implementations (and GPUs). Device reports can be uploaded with the free (and open sourced) client side applications available for Windows, Linux and Android (ARM and x86).