Really nice design, it's a beautiful look. Tons of room to hang glassware, although note that the slots on the ends are not as wide as the rest, and our wine glasses wouldn't fit in those (we hang the port glasses there, which works perfectly). 

Each shelf came with 2 pre-drilled holes, and the package came with 8 screws and 8 drywall anchors. To ensure that at least two screws would be hitting studs, I drilled two additional pilot holes for each shelf, to use all of the provided screws. Was pretty easy, only took a few minutes to get it all on the wall