Candidates must apply for NEET UG through the official website of the National Testing Agency (NTA). The application process is completely online and includes registration, filling out personal and academic details, uploading required documents, selecting exam city preferences, and paying the application fee. Candidates must upload scanned copies of their passport-size photograph, signature, and other documents as specified by NTA. After submitting the application form and paying the fee, candidates should download and save the confirmation page for future reference. Corrections to certain fields may be allowed during a limited correction window announced by NTA.