Go get your first taste of linguistics with this nice new free online course!
As a final bit of encouragement: here's a picture of me trying to navigate the channels of Leiden using a world map of linguistic and religious diversity from the 1920's. See how inspired one gets around that town!
Univeristy of Leiden is a great place, I've been there many a times. I have not attended a class by prof Oostendorp, but from what I've seen it seems lika a really good course and I hope you'll take this opportunity to get your first taste of linguistics.
p.s. The Netherlands is an exceptional place when it comes to linguistics, they host a large number of linguistic journals, departments and institutes - especially if one considers per capita. I'm not sure why this is and I'd like to see numbers of this.
* No, I do not think the title is meant as opposition to Russel Gray's Nijmegen lectures.