Hi Sandhya.G.
Welcome to HR domain. It's necessary you have to seek every materials related to your profession and gain knowledge day after day. Every minute is a learning opportunity and keep learning always. As a fresher in recruiting you have to first learn about the practices, channels etc. followed in your establishment. Master all formats of documentation. Seek guidance from your seniors and colleagues. Try to avoid what mistakes others committed in the past. Know your organisation, its growth plan & scheduling them, requirements & essentials, types of personnel needed and where to approach, Problems being faced with attrition, present scenario, future expectations from you, what you can deliver & what you cannot and so on. Responsibilities differ from post to post. Nevertheless no one will prevent you learning things more and more. And above all you should have indepth knowledge of Labour Laws, statutory documents, stipulations etc. Of course it's a long drawn process and you have to start right away.
This link I came across just now which I suggest you to have some tips.
HR Metrics and Analytics - From KPIs To Big Data
All the best.