Walking is the best possible exercise. Habituate yourself to walk very far.
Thomas Jefferson

Click to visit www.visitwesterham.org.uk

An excellent book is "Rights of Way - a guide to law and practice", published jointly by The Open Spaces Society and The Ramblers Association (ISBN 0-900613-73-4).  This book contains verbatim extracts from the relevant Acts of Parliament, together with easy-to-read explanations and a comprehensive cross-referenced index.