I don't remember where I first learned of sex toys, but I do remember already knowing what they were when my younger brother found a dildo buried in the dirt in a field behind our house (he didn't know what it was for but knew it was a big fat dick and thought it was hilarious).
I bought my first few toys when I turned 18. Got even more than I expected since the place I bought from also threw in HELLA random extras like lube, condoms, and more toys.
The only thing I really use regularly is the Bad Dragon "Chance" dildo I originally bought as a joke. But, then one day I actually used it and now I am a size queen 🤷♂️