Complex sentence: To advance his ideas, Baden-Powell wrote the book, "Scouting for Boys", which targeted boy readership, and described the Scout method of using outdoor activities to develop character, citizenship, and personal fitness qualities among youth.
Split into simpler sentences: To advance his ideas, Baden-Powell wrote the book, "Scouting for Boys". This targeted boy readership, and described the Scout method of using outdoor activities to develop character, citizenship, and personal-fitness qualities among youth.