The registrations for JEE Main 2018 will begin from December 1 and conclude on January 1, 2018. Before filling up the application form, the candidate should have a scanned image of his/her photograph and signature. These scanned image are to be uploaded during the submission of application form. He photograph should be colour or b/w (but clear contrast) with name of the candidate and date of taking the photograph.
How to register:
According to the official website, "Admission to undergraduate programmes at NIT's/IIIT's/DTU/CFTI's shall include the performance in class 12/equivalent qualifying examination/in the Joint Entrance Examination, JEE (Main)."
Furthermore, "the states of Madhya Pradesh, Nagaland and Odisha have joined JEE (main) system. Therefore, the candidates seeking admission to the institutions in these states, which were earlier admitting based on their state level examination, are also advised to fill in the JEE (Main) 2018 application form online."