Pilot Lyons: Before you can learn to instruct you need to learn to fly. It will help if you can learn to look up information like "what qualifications do I need to be an instructor?" rather than rely on getting help from this forum. Please do not think everyone and his dog are prepared to subsidise your flying. The OP has been given some good advice in reply to a reasonable question.
You have now jumped in with your query before taking the trouble to look for yourself. What makes you think students should pay for your CPL? What can you offer them in return?
You will need to complete an instructor training course. Then you need to persuade a flying school to employ you.