Question Best Way from Kolkata Airport to Sealdah Railway Station?

I'm arriving at Kolkata Airport on 30th May and need to get to Sealdah railway station to catch a train. Since I'm not familiar with the area, I have a few questions and would really appreciate any advice or tips. What's the quickest way to get from Kolkata Airport to Sealdah railway station? How long does the journey usually take? Also, are there any good spots near the train station where I can grab a bite or do some quick shopping? Thanks in advance for your help!