5.) Tampons Will Fit Better After
No joke. They really will. I was never able to get tampons up there before I lost my virginity, probably because I was too tense whenever I tried. But the weekend after I did it for the first time (and the second, and third, and fourth, and so on), I decided to try to insert a slender/regular, even though I didn't have my period. Not nearly as much resistance and I was able to get the entire thing up there.
So there you go! Now, if you ever get around to it, you won't be so lost when you actually try to fuck. Just remember to be safe and wear a condom. (Even though, yeah, it feels better without it.)