A Charity Is a non profitable organisation which is required to be registered by government so that all its activities are reported. Your interest is to provide social service to the poor and children, therefore you will need to research and write a proposal.Co-oporation with other charities is important to avoid depulication of existing services.In some cases individual work may not have a big impact to the people,so team work is Vital to make the best for the charity.
Your desire to come to help is appreciable but I would suggest you to actually volunteer at a charity organization first. This is important for you to have a closer look at their working mechanism. This way you can put your knowledge and your resources to use in the most effective manner. However, for your info to start one you need to follow a similar sequence of actions as given on this website www.elm-training.co.uk