Welcome to site at the start just answer and ask questions pretty soon you will find your feet then you will rack up th xper points going up levels. There is nothing mystical about xper levels it just means the number of points you have. Enjoy yourself here and because of your age be careful too.
It's really easy to get to Xper level 2, the threshold is a lot lower than higher levels. All you need to do is use the site for its intended purpose; ask questions, write myTakes, comment on things and give your opinion on questions. You can share the site and tell GaG and they'll give you 100 Xper. If one of your myTakes gets promoted, you'll receive 100 Xper or 150 if they share it on their Facebook page. You'll get Xper pretty fast but you shouldn't be focused on that. Xper takes 24 hours to process in your account so you won't see it go up as you go around the site, you'll see more points after 24 hours. Enjoy the site!