The one complaint people often make about Bugaboo buggies is that it can take a bit of practice to get the hang of putting them up and collapsing them again.  Every Bugaboo comes with a demo dvd included, but just to give you an idea of how they work, here are some demonstation videos.

Bugaboo Frog:

Bugaboo Gecko:

Bugaboo Bee:

Bugaboo Cameleon: