You can tell and teach people about the unique animals that live there. You can also encourage others to help. Lastly as a basic step, you could make a support group. Ex; a walking group for rain forests.
Teach others about the importance of the environment and how they can help save rainforests. Restore damaged ecosystems by planting trees on land where forests have been cut down. Encourage people to live in a way that doesn't hurt the environment. Establish parks to protect rainforests and wildlife.