To troubleshoot a problem, you need to be specific about what's not working. Is the car not starting? Is there a specific electrical component that's not functioning? Once you describe the symptom, you can consult the owner's manual's fuse diagram to identify the relevant fuses and relays. You can also find online resources with fuse box diagrams for your specific year and model.
In short: You need to diagnose the problem before looking for a specific fuse. Focus on describing the symptom, then use the fuse box diagram to check the relevant fuses.