Najdorf Work

Working on the Najdorf this week.  Much of this book covers the 6.Be2 lines.  I have never had an opponent play that against me.  Mainly 6.Be3 is what I see, but I'm going to try it and pick up what ideas I can about the general handling of the Najdorf as a weapon against 1.e4. 
  I'm finding that I don't study openings real well.  I keep feeling like I have to memorize everything in them.  I know that I have to memorize a few things, but going through this book slowly and methodically will help sort out all the rubbish I'm hoping.  Let you know in a few days how it's going.