I am interested (fresher) about copy writing and want to make a career in this field but having no knowledge. What should I do?

No problem! Here's an even tighter version:

Learn for free: Start with Copyblogger or AWAI.

Practice & Analyze: Write, study strong copy, build a portfolio.

Network & Freelance: Connect with marketers, try Fiverr to gain experience.

Keep learning and writing consistently - that's your key to success!