Hello,
Photography is a lucrative career and is high on demand and can be very promising if you acquire right sort of skills and training. Since you are a 10+2 passout, you may wish to either pursue BA in Journalism & Mass Communication which offers photography as a subject in its course structure or you may wish to pursue a Diploma/Foundation course in Photography which will equip you with technical skills as well as provide access to the professional world of photography. The choice depends on your interests.
Hope this helps you out, feel free to ask for more info.
Best wishes for your future.
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