Hi everyone, this is my first post here! I'm a college student going for a cheap book shelf (free standing), but I don't want to buy one of the cheap ones at Walmart / target. So, I figured I'd get a sheet of plywood, cut it, and nail it together. I sketched out a plan on paper and ran into a question, that only the sages could answer. Is 4 foot too wide for a book shelf? College text books (any books) get pretty heavy really quick. I was planning on using 1/2" plywood (pine) I was going to make it 11" deep, the shelves 4' wide (that makes the overall width 49"). And the height overall 47". I was going to put a backing on the back, like 1/4 something cheap, maybe brackets as well. I'll do an actual Google sketch up after I get my rough draft down. Just as an FYI, I do have some woodworking experience as a hobbyist, but I'm not nearly as knowledgeable as you guys. I appreciate any advise.