There are 4 main sections to bronze DofE award, volunteering, skills, physical and expedition, the bronze section of DofE is usually completed over 6 months usually with 3 months each for skills, volunteering and physical sections, with the final expedition taking place over 2 days and 1 night.
volunteering simply means giving time to your community, giving time up to help people, animals or the environment, this could be done in any number of ways that all counts to your final award. volunteering for a charity or non profit organisation will help towards completing this section.
The skills section means you have to broaden your knowledge around a particular subject, for example you could learn how to properly care for an animal or a reptile, you could learn what it takes to become a gardener or chef.
For the physical section any sport, dance or fitness activity is allowed, for example playing a particular sport such as tennis and showing personal improvement would count, learning to coach tennis would count towards your skills and becoming a volunteer coach would count towards your volunteering.
The expedition section will require you to plan, train for and complete an unaccompanied self reliant expedition with an agreed aim. In order to complete the expedition section you must complete training for the level of your award, at least one practice expedition, and the qualifying expedition that is assessed.