I am looking to provide social media marketing services to small business owners. I have spent a great deal of time and money to optimize my website so that it gets a high volume of traffic. I was looking to partner with another social media company for them to provide me their webinars that they have created for various social media courses. They are doing this because I can send them referral business and feature their offerings on my website. What type of legal agreement do I need wit this? Can the company try to demand money for this later on if my site is successful or claim that I let other people download these videos and that I am now liable for these damages?