"Helping" can mean a lot of things. Do you want to know about:
* Conservation efforts? What organizations are working to protect their habitat and prevent them from going extinct?
* Rehabilitation of injured monkeys? Are there rescue centers that care for injured or orphaned black-handed spider monkeys?
* Research on the species? What are scientists learning about their behavior, genetics, and how to best protect them?
* Something else?
Please clarify your question so I can give you the most relevant information.