JEE advanced is strictly in online mode and hence, in our opinion one must solve previous year papers via online mode to get a good feel and be comfortable with this process.

Hence, past papers with solution sets have been shared for downloading below:

http://www.iitbooks.co.in/2017/04/JEE-Advance-Previous-Year-Solved-Papers-PDF.html

Alternatively you can purchase book known as "14 Years(2003-2016) solved papers for JEE Main and ADvanced"  authored by DC Pandey, RP SIingh, SC Agarwal which costs Rs.400 on websites like Amazon.

The book is highly comprehensive and has exhaustive problems and solutions as well.