From you query we are assuming you have no prior experience and want to pursue a career in acting. We would suggest you enroll in a good Training Institute like NDA., Whistling Woods etc. to receive formal training. You would then need a good portfolio of photographs done professionally and work in Theater , Short Films etc, after which you can approach casting directors, Co-coordinators (you can find their contact details on our site) with your portfolio and show reel. Best of Luck.