The Good Health Guide

Green Metropolis
Review by Liz Bygrave
http://www.greenmetropolis.com/
This is a great website for buying and selling second hand books.

All books cost £3.75, you can search for a specific book or browse through different categories. If I’m looking for a book this is always the first place I go to, and they often have it.

I’ve never sold any books on it myself, but it’s a good way to cut the cost of your reading if you do.