Research Data is shared to meet funding agency and publisher requirements; sharing of research data also encourages collaboration between researchers, encourages transparency and enables reproducibility of research results and reduces the redundancy of data production in research. Research Data Management Support assists researchers in identifying appropriate repositories for sharing and preservation of data, creation of metadata to describe data, and acquiring persistent identifiers (DOIs) for data and publications.
GitHub is a website that is cloud-based, where researchers can share code, data, and documents with other people. It is also very good at version control. This blog post from Hubspot provides an excellent introduction for first time GitHub users. GitHub hosts it's own tutorial videos on more specific aspects of the website, and the GitHub Learning Lab will let you explore other topics more in-depth.