Rules of registration with tax department

[tradex]

Hello,

If some one work as self employed as sole trader ya contractor then wat are the rules to get registered his business with tax department.

mean kia is kay liay koi khas turnover ho tu phir register kary kary ga ya phir kisi be income ya turnover par register karwana paray ga

AND what is the procedure to get registered?

i am talking about income/turnover of around 5 lac for a year

THANKS