How to prepare a sentinel-1 SLC product for polarimetric processing using SNAP

Dear all.
Does anyone know that how to prepare a sentinel-1 SLC product for polarimetric processing using SNAP?IS the procedure right:resample》subset》calibrate》speckle filtering》geocoding?

You can refer to this

http://sentinel1.s3.amazonaws.com/docs/S1TBX%20Polarimetry%20Tutorial.pdf