There are some great ideas to help you get started or encouraging you to keep going with the walking habit, on the Living Streets website, including .......
20 Top Tips for fitting in a 20 minute walk in each day, with a downloadable checklist and poster
Activities to keep children interested
Random Walk Generator (sounds fun!)
Walking In Later Life
Take a Walk and Post a Hug
Walking With a Purpose
And if you want some suggestions for local walks, the Harborough District Council Website
has lots of information that will help you, including a great little leaflet called Strolls on Your Doorstep.