Online application process: Apply through www.upsconline.nic.in; Complete Part-I and Part-II as per instructions; Fee: Rs.100 (SC/ST/Female/PwD exempted); Payment via SBI cash deposit, net banking, or cards; Required documents: scanned photo and signature (.jpg format, 20-300 KB); Photo ID details (Aadhar/Voter/PAN/Passport/DL); Avoid multiple applications; Use valid, active email IDs; Check emails regularly including @nic.in addresses; Apply well before deadline.