If you're looking to add a bookcase display rack to your home without the use of screws, you'll find that it can be a tricky project. The good news is that there are a few installation tips that can help make the process much easier.
One option is to use an adhesive strip that's designed to attach directly to the wall. These strips work well on both wood and drywall. You can buy them at big-box and drug stores. They're also a great alternative to toggle bolts, which are a bit of a hassle to install and leave an oversized hole that can show on the wall.
Another option is to anchor the shelf directly to studs in the wall. While this method is more expensive, it's usually the best way to secure a bookshelf.
Once you've located studs, mark their positions on the wall using a pencil. This will give you a good idea of where to drill and screw the brackets.
You can also use drywall anchors to help distribute the weight of the shelf across a larger area of the wall. Just be sure that the anchors are long enough to reach the studs, and that they're positioned so that there's enough wall between them to prevent the shelf from bouncing off.
Finally, there are also floating shelves that don't require any fasteners at all. They're a little harder to install, but they're also more visually appealing. To install them, you'll need to assemble the hardware and then attach the shelf to it.