You're 14. You've got all the time in the world. I wish I had C2 when I was 14. I'm 27, just now picking up programming and C2, but I'm in for real. Don't be discouraged when you make a crappy game. As long as you learned something from the experience, it was worth it. Be a hobbyist for like 4 more years or so. Learn how to program clones of other games from scratch.
Pick a variety of games like:
Mario, Angry Birds, Pong, Donkey Kong, a side-scrolling space shooter, and more. Don't worry about graphics for now. When you've completed enough games to feel comfortable in yourself, go to Newgrounds. Make a friend on the Collabinator, an artist. Have them make good art for your game (plenty are willing to do it for free if they can have some say in the art direction and possibly a bit of the game design). Put your heart into that game, spend months on it, and then release it when it makes you happy.
Then, watch the slew of 2 and 3 star ratings come in. No matter, your next game will be better. And you'll have learned a lot.
If you're starting game design at 14 years old, you've got a lot of time ahead of you to hone your craft. I say go for it, but commit. If you want to be a game designer, then BE a game designer. Don't give up just because you have some friends say your game is crap. All my games are crap, but I know that one day, one of them won't be. Keep it up!