Windows Phone Confusion

So I picked up an 8X as I've always been curious about WP. I've only had it for the day, but I'm pretty confused about something. If you miss a notification, does it really just vanish forever? I'm not seeing anywhere that they seem to show up at. I'm assuming I'm missing something, as that wouldn't make any sense. Also, scrolling feels like it's locked in slow motion. Is there any way to change it to scroll at a decent speed?