To apply Turkey visa online, follow these steps. First, determine your eligibility and gather the required documents, including a valid passport and a recent photograph. Next, visit the official Turkish visa application website and fill in the online application form with your personal and travel information. Third, pay the visa fee using the available payment options. Fourth, upload the required documents and submit the application. Finally, wait for the processing time, which can take several days. You will receive an email notification once your visa is approved, and you can download and print your e-visa for presentation upon arrival in Turkey.