JMI does not publish their questions paper online, however you can practice the sample paper of jmi for BA LLB.

 here are some books that you can refer for preparation.

purchase the clat preparation book of arihant.this book is very efficient for amu and jmi ballb preparation also. Also if could get - CLAT Study Kit: Legal Reasoning, English, Logical Reasoning, Mathematics and Legal Awareness and General Knowledge by Deepu Krishna and Remya Krishna, it would be very helpful to you.Current affairs can be covered by reading newspaper.