A: This small heavy duty box is your ticket. Depending on the type of books you have, they can be very heavy. A larger box would make it harder to lift and transport. These boxes stack well and are easier to carry even if they are heavy.
A: Depends on the size of the books, but suggest no larger than the medium size box to keep overall weight reasonable/manageable
A: I’m my opinion, a smaller size box is better for books because books can be so heavy. Even paperback books stacked together can be heavy. The heavier the box, the harder it is to move. If you have large tabletop books, you will need a larger box, but the more shallow the box, the better to restrict the weight.
A: Just assemble like any other box w/tape…