My girlfriend has a lot of books. A lot of hardback books. A mountain of books. Our apartment has exactly zero shelves. But there is sixteen feet of clear wall space that a bookcase can go up against and none of the shop bought laminate versions appealed. So these are my plans to make an appropriate bookshelf. The entire project cost $220 for all the materials.
Circular saw / table saw / jigsaw / cross-cut hand saw
Wood drill bit
Angle drill guide
3/8” dowel centres
5x - 8’ lengths of 1 x 10 softwood
14x - 6’ lengths of 1 x 10 softwood
132x - 3/8” x 2” hardwood dowels
24x - 2½” x ½” corner braces
4x - 2” corner brackets
4x - 4” straight braces
Wood stain and protection of choice
Another option instead of solid Spruce/Pine/Fir is to use a good quality ¾” thick plywood. An 4’x8’ board ripped into 1’x8’ boards by the store could be slightly cheaper in price if you don’t mind seeing the plywood edge.