There are many things to consider, during this first year of university. Choosing a Major So, the first big challenge is to start thinking about a program of studies. Classical wisdom states that you should probably do a degree in Biological Sciences, and this is a very viable approach. Keeping in mind that the single largest selection factor is grades, you may wish to consider taking an easier program of studies and fulfill the prereqs as options. So, the bio route is a good way to go, but consider your options.
Health related positions are preferred, and development work is good as well.
Most hospitals have volunteer programs, as do many outreach and special needs agencies. The more hours you have the better and some programs have waiting lists, so get on this early. Many applicants will have hundreds of volunteer hours, so don't miss out on this one. Otherwise, worry about that demon later. General Overall, not a lot to do this year.