Find the web site of the repository at your institution and poke around a bit. (If your institution doesn’t seem to have an institutional repository, try to find the institutional repository at another institution that is similar to yours or with which you’re familiar.) Then find the web site of another kind of repository (choosing from one of the categories above) and poke around a bit. What similarities and differences do you notice? You might think about these first with regard to the content of the venue, then from the perspective of someone who might wish to deposit data in the venue, then from the perspective of someone who might with to access data from the venue.