Beautiful piece.  Easy to assemble.  The lower two shelves fit into notch with 1 wood screw to each leg.  Easy to screw in, but I felt there was a limit to how tight you should screw it in that was a balance between making sure it was snug but not to tight to where it damaged the wood.  It's a nice piece.  You'll be happy.  Just take your time putting it together and don't over tighten.  Take your time to rotate, rotate, rotate your adjustments until everything is in sync and snug.

Pros: Solid wood.  Easy to assemble. Beautiful.
Cons: I think there is the potential of doing damage during the assemble process.  It's so easy to assemble and therefore is worth the extra time to go slow and sure.