My earliest clear memory is that of my 4th birthday, from the moment I woke up to a couple of hours later. I remember my mom telling me to get dressed up so we can go to the daycare and after to school, which I started to do and then thought “what’s school? what’s daycare?” (these I asked) “why are you my mom?” (this one I didn’t for some reason). After being fully dressed, we got into the car and drove to the daycare, I was guided to a room that’s next to the kitchen and told to wait. A couple of minutes later, I notice a light coming from the hallway connecting to the kitchen (“what’s that? why is it coming closer?”), then the nanny, her husband and my mom come out with a cake. I then immediately asked why there was a cake, I was told it’s my birthday, and then I asked what’s a birthday.
So yeah I think kids ask a lot of questions the moment or around when they start to be self-aware.
2.5 years and I recall going to the hospital to see my sister in maternity ward nursery display and asking which one was her. My dad pointed her out among the babies there but I recall not being sure of which one he meant. I also recall, from the following weeks, my parents treatment of her umbilical cord snippet with rubbing alcohol and asking what they were doing.
After that, my next coherent memory is around the toilet training stage but I don’t know the exact age. I recall feeling the urge to go poop then trying to get to the bathroom but not making it. So I pooped on the floor, then picked it up with a diaper, disposed of it, and with pride told my mom what I had just accomplished.