Hi Amudha,
You can enhance your skills and knowledge in HR by taking up some MOOC courses from good websites like Coursera, Alison institute, Lynda.com. Once you start searching MOOC, you will get thousands of courses; choose what suits your interest and what you want to become. These courses are paid as well as free with certificates, which you can put up on your LinkedIn profile as well as your resume. Let me know if you have any questions.
Go for it!
Regards,
Arushi