Do they offer any sort of cooking classes at your school that you could take as electives? You might also check out some of the bakeries, supermarket chains, and restaurants in your area. They may offer classes. Do a search for cooking or culinary classes in the town where you live. If you did find something, would a parent or someone be able to drive you or could you take a bus?
Here is another source of some online classes that you could start with: Free Online Cooking Classes