Check out this thread: Wild Camping Allowed?

Be prepared for official campgrounds in Europe to be very different from those in Canada, with the main difference being the reduced amount of space.

Try Athelticum for cheaper camping supplies than Oschner. For a range of high quality camping supplies then check out Veloplus; it's a store aimed at bike-tourers, but the camping supplies are suitable for all campers. Unfortunately, their website is all in German, but they have physical stores near Basel, Bern, Luzern, and Zurich, in which the staff nearly all speak good English and are very knowledgeable. Otherwise, order online from the UK.