Hey

For becoming Doctor you must have Biology as your major subject in 10+2 and then you may follow given process:

• Take admission in the program in which you are interested like;
  MBBS
  Bachelors of Dental Surgery BDS
  BSc Nursing
  B Pharma
  BAMS
  BHMS
• Complete you graduation with good academic record and undergo trainings as well
• After that you can apply for various medical posts in Hospitals, Labs or clinics or may get on campus placement
• Otherwise you can go for Masters and start practising in your field in clinics or hospitals as surgeons or Doctors

For further doubts, ask us.