Can helicopter or aircraft intro flight hours count towards a private pilot license? I'm trying to figure out whether I'd prefer to fly helicopters or fixed-wing aircraft and am taking a few intro flights where the other person lets me fly for a little bit.

Can these hours count towards my helicopter / aircraft private pilot certificate? If yes, do I need a logbook or what kind of proof do I need?
Yes, these hours can be counted towards PPL, if you fly with a flight instructor next to you, which is generally the case if you go to a flight school and ask for "introductory flights" anyway.

In my case, they provided me with a tiny logbook for free so I can log my hours.