1. The most crucial first step is understanding what is required by your instructor or mentor.
Look at all of the instructions you have been given, and ask questions if you don't understand. Write out those instructions for yourself in your own words and then show them to your instructor to see if you are correct in your understanding.
2. After you are sure you understand, you need to pick a topic for researching. To do that, you will need to look at my lists here and in other articles I've written.
3. After you have chosen a topic area, you will need to look up the research that has already been done on that topic. If your project needs to be original, you must also be careful to understand all of the research which has been done previously to make sure you are not repeating what has been done by someone else. There must be something new that you are contributing to science. However, for some projects in lower levels of learning of high school and undergraduate education, it is all right to repeat or summarize the projects of others.
4. Now that you have gathered the information on your topic, read it carefully and take notes. Use those notes to formulate your thesis question.
5. After you have your question, you can then write a thesis answer. If you are doing an actual science project, then you will have to devise an experiment to test that question. If you are doing a written essay based on the research writing of others, you can write your answers to the question based on what you have read in your literature search.
5. Using those thesis answers, you can begin to put your outline together.
6. Use my information about how to write a research paper to help you finish your project.