fiveoplus- Poking around the website, it looks like the class of 2009 might've been the first to have INSPIRE program participants. I don't have any extra information about it. However, if you go
here they list emails of students in the classes of 2009 and 2010 who I assume would be willing to answer questions. There's also a link "Getting involved in undergraduate research" that has helpful information for anybody. Sorry I can't be more helpful.
scarolina22- It really depends on what you're passionate about. And if you don't know that yet, your sophomore summer's the perfect time to try out multiple things. You could use volunteermatch.org to find volunteer opportunities that interest you. You could try to set up some shadowing experiences. At this point, pretty much any activity that you dedicate your time to can be helpful.