Ok, this post is going on here to get rid of some of the confusion that seems to be goin around.
1: yes, we are humans at first, and are rounded up to be brought to equestria, and upon arrival, we are ponies.
2: backstories are for your human lives, and description is your pony self.
During one of the chapters of Pulling Heartstrings, Jason visits an alternate universe, wherein the main character of Our Newfound Lives.... erm lives. Anyways, at first, Blinky (my oc for Our Newfound Lives) is told that there is a way to travel between universes and dimensions, and is given the exact calculations needed to arrive where Nova (Pulling Heartstrings) came from, though Blinky is only given a name, and nothing more, as this event takes place before the idea of reinventing the My Little Pony franchise was brought to Lauren Faust. Years later, Blinky becomes a brony, and then happens upon the note that was left by Nova, outlining everything; Blinky is then contacted by Nova again in another chapter, saying that him and a group of his friends are needed to come right away. Blinky then sets off to gather the needed resources; the first, being a building that has a basement far enough underground that the device which is used to cross universes will not interfere with anything else... that building, is The Bellagio Hotel, and Our Newfound Lives starts right after the acquisition.