One thing engrained in my sisters and I(from an early age) was the discipline of taking proper care of our books. We were made to believe that books ARE valuable and should therefore be handled likewise. It's sounds like a very simple principle to pass on to a child but the results are far reaching and actually translate onto other areas of one's life. Today, I still value books, handle them well and have naturally passed that down to my own kids, who (I KNOW), will effortlessly pass it down to their own kids!
Here are a couple of things I was taught and have passed on to my children on the matter of being 'A Good Steward of Books'...
1) Have a designated area where you keep all your books (it's easier for children to develop the habit of packing away when they know WHERE to pack away)
2) Discourage eating and drinking whilst reading a book as this easily soils books
3) Instill the discipline of keeping reading books as READING books. Not to be scribbled, written or drawn on!
4) Encourage the use of a bookmarker. The habit of leaving a book opened(faced upside down) or folding the corner of a page(dog ears) will ensure that the book dilapidates very quickly!
5) If a book tears, be quick to mend it and teach your child to do the same.
These are a few tips and I'm sure there are plenty more! Please do share with us your own helpful nuggets on this one!