PoS and Pow??

[Khilone7]

As my rank tells you, I am a newbie.

The terms PoS and PoW are making me be like ->   

Can someone explain those terms to me plain and simple?

Also what does staking mean and how can I do it?

Thanks in advance, someone.

[mocacinno]

this one seems to be simple enough for a new user:
https://www.youtube.com/watch?annotation_id=annotation_207603943&feature=iv&src_vid=ASCGQFZgcT8&v=NqgzF63yNcU

[Khilone7]

Thank you very much !