Crowdfunding involves raising funds from a large number of people ("the crowd"), typically via the internet. It has a long history but has grown significantly with new online platforms. There are different types including donation, reward, equity, and debt crowdfunding. Successful crowdfunding campaigns require choosing the right platform, building a crowd in advance, having a good video and rewards, and promoting on social media. Crowdfunding experts can provide advice on choosing platforms and running successful campaigns.