After 12th arts, you can apply for GNM course in nursing. After doing Post Bsc Nursing after GNM , your degree will be equivalent to BSc nursing.
GNM is a three year diploma course. To take admission you must secure 40-50 % in qualifying examination. There are various entrance for government colleges as well as for some private colleges. You need to take perform well in them while there are some colleges which give admission without entrance.
Fees for GNM is variable in various states and colleges but on an average scale it begin from INR 45,000 / annum to INR 2 lakh/ annum.