I want to help but I don't know what to do

 Feel free to listen to your heart as the needs of people living in the street is so huge, you will always be right whatever your kind of good help can be: food, shelter, money, clothes, administrative help, or whatever . You can also help a lot just by smiling or talking to people in the street,as they will feel they are someone that deserve love, that would prevent them from suffering to much as they are to often rejected by people passing by.