Visit the NIOS website The National Institute of Open SchoolingYou'll get the form in the admission column.ORVisit your nearest NIOS centre.I would ask you to visit your nearest centre and get registered through it . It would be easy for you your fees would get paid on time, you'll receive each and every information . You'll be updated.Whereas, if you get admission in NIOS by self registration, you'll have to be very aware which is difficult as the NIOS website is not always up-to-date.Hope this helped you.