Hey as per my idea IRDA is Insurance Regulatory and Development Authority of India, and here I am giving you its details

Qualification
Candidates should be +2 from a recognised school/board

Age limit
Candidates should not be below 18 years and there is no upper age limit

Selection process
Written test
Interview

Here I am giving you some books for IRDA exams
Insurance Companies: Adminstrative Officer Recruitment Exam Guide (Test in English Language-Descriptive Test)
Insurance Companies: Adminstrative Officer Recruitment Exam Guide (test In English Language-descriptive Test)
Advanced General Knowledge (english)
General Awareness Basic Banking & Financial Issues
General Knowledge 2017 Arihant
Computer Knowledge for SBI/ IBPS Clerk/ PO/ RRB/ RBI/ SSC/ Insurance E