I've done B.Sc with PCM. I want to be a programmer. What should I do and how can I start?

Go for MCA degree but before it learn basic programming languages like C, C+, Java and understand all the basics clearly in your mind. Participate in competitive programming in Hackerearth, hackerrank, codechef, etc.

Dear Umesh, After B.Sc with PCM, you can choose your Post Graduation in MCA or any Diploma in Data Analytics through any reputed university, you will get good career opportunities in this field. Wish you all the best.

Start with simple flowchart design for solving problems. Once you get the hang of it, try learning C, C++ or you may start with Python. Gradually work your way to Java and higher languages. Master any one of them and keep practicing.