Complex sentence: The purpose of the walk was not only pleasure but also to help the rural community especially the small dairy farmers, with the plight of the industry, therefore all profits from the sale of the guide book go to Samaritans.
Split into simpler sentences: The purpose of the walk was not only pleasure but also to help the rural community especially the small dairy farmers, with the plight of the industry. All profits from the sale of the guide book go to Samaritans.