My first experience occurred when I was around 11. I was in Girl Scouts and my troop took a trip to Gettysburg for the weekend. It was lovely there as we toured the battlefields during the day, our motel was a bit creepy (it was next to a graveyard), but I never saw anything in our room.
Our last night there we took the 10pm ghost tour, which I found fascinating. After the guide finished telling us about the school's bell tower ghost she mentioned that the night before, her 11pm tour group said they could see the ghostly young woman standing on the ledge that she leapt to her death from. I was fascinated and wished I could see her for myself!
Anyway, nothing else eventful happened while we were in Gettysburg...However...
I was up late one night a few weeks later and I had to go to the bathroom (My bedroom is the entire upstairs of my house. The doorway of the kitchen is visible from about halfway down my bedroom stairs) so I descended the stairs and when I got into view of the kitchen I saw a young woman with long black curls wearing a white gown, standing in the kitchen doorway, her arms folded as if to say "You wanted to see me, here I am" Of course I freaked out (hey, it was my first time actually seeing a ghost) and went back to bed.
Note: NO ONE in my family has black or curly hair.