Some links to such resources are included elsewhere on this homepage. Keep in mind that your time and resources are limited, so make sure that your topic is narrowly defined. Go to the library, or to the internet, and read everything you can on your topic. Talks to others who might be knowledgable in your field of interest. Don't be afraid to write to companies or individuals who might be able to help you.
Many scientists are more than willing to help young people with an interest in science.
Make sure you have chosen a topic that can be investigated in the amount of time you have available. Use a calendar to identify important dates. Allow time to fill out the forms and review your research plan with your sponsor. Certain projects may need more time because they require prior approval from the Fair's Scientific Review Committee, or a Institutional Review Board. Allow plenty of time to collect data or make observations-even simple experiments do not always go as you expect.