Jo, co & no

Three words heard all the time here in the Czech Republic, and so different from their English "meanings".

Jo, (sounds like Yo) is said a lot here: it means: Ok, or the equivalent of OK.
Co, pronounced like "so" means: What!!?
No, is short for ano, which means Yes.

Jo, is not the "Yo" of "Rocky Balboa" or of young "american" hipsters trying to get your attention, but is a word of Agreement, meaning "ok"..."Sure".
one hears "no" all the time, but it means the opposite of no, but yes!(really confusing when you hear it, usually as two people converse... no, no, no, yes confusing)
and co is THE Czech word for: What??? Co Ze?

tak...oh yes, "tak"... tak means "so" or using a larger word.. "therefore"..

tak, Got it?