Trying to understand proof of stake technically

[redigaffi]

Hello, im a dev and i dont understand how I could implement a basic PoS system.

What I understood so far:

- The more stake, the more probabilities to "mine" a block
- Each node votes on other nodes to choose the node that can "mine" the block
- So what does really do the one that will mine the block? i've seen that hey have to do proof of work, and the difficulty is based on their the stake, the more stake the easier it is? But then this is hybrid, proof of stake and proof of work?

- How to control block creation time in this system?

Is there some technical guide or code example? Could anyone explain me better?

Thanks!