I didn't get lost or anything because my high school is small...plus it's just impossible to be "lost" but I guess it can happen if you're nervous enough.
The only thing I remember about my first day was being excited that there was always a line to get pizza...everyday! (that got old soon enough though) and the teachers giving us all of our books on the same day and my backpack was so heavy, I literally had to drag it to my last class or 2.
But overall...my freshman year sucked...for various reasons.