While the university provides courses in Swedish, perhaps you would like to learn some easy words/phrases prior to arriving? Duolingo - The world's best way to learn a language is an excellent and free resource for this purpose that you can access on your computer or phone. Here’s a popular video (140) Learn Swedish in 30 Minutes - ALL the Basics You Need - YouTube that you can otherwise have a look at and here is a website Common Swedish phrases to know - The Newbie Guide to Sweden with an easy-going introduction!