Volunteering in Linguistic fields?

Hi there. I am a 20 year old student who is returning to study after a two years abroad in South America. I am fluent in three languages and I will be commencing University in October 2015 to study Linguistics. In the meantime I am interested in developing and continuing my experiences in language related fields and in particular have been drawn to the idea of linguistics related research and studies. Is there anywhere that would allow me to volunteer to do this or something similar? Or any other projects/organisations I could become involved with? Thank you so much in advance!