How does windows allocate memory for processes?

Question

C++ / C#

Hello! It was necessary to deal with the structure of DLL files, their projection into memory - Jeffrey Richter began to read. Everything went well until I got to virtual memory. The material began to go very badly, I understand almost nothing.
Can someone throw off resources about virtual memory, how it interacts with RAM and instructions for interacting with all this through WinAPI

Answer 1

how it interacts with RAM and instructions for interacting with all this through WinAPI

In this context, no way.
All programs work with virtual memory - there is no other.
And the OS itself decides how to interact with the real data storage, whether it be a RAM stick or a swap file. And you can't influence it in any way.
It's up to Windows to completely isolate you from things like RAM.