How to install PhysX 5 SDK?

I want to build and experiment with latest PhysX demos, like with kaplademo before. So I found PhysX page, clicked Get PhysX 5 in
, installed Omniverse… And now what? I don’t see any PhysX SDK mentions. Where to find demos and sources for them? How to install PhysX SDK and get access to its .lib and .h files?

I also want to know this. It says “apply for early access to get physx 5” but doesn’t explain how or where