I've worn contacts since third grade. I'm in seventh grade now. I have no problem with them. It took me less than a day to get used to them (only about an hour, actually), but for some people it takes longer. Just be sure to keep your hands clean, never sleep in them all night (naps once in a while are okay). I use acuve oasys, but I started out with acuve 2. Oasys is waay better.
One more thing... I know they say to use each pair a full month, but I usually change mine every 2-3 weeks.
So congrats, you'll be able to see better out of your contacts, and your eyes won't get as bad as quickly.