What are the bricks in this picture/video? Can someone please identify the pieces in this picture?
I'd like to acquire these, but I'm not a LEGO enthusiast, so I don't really have an idea where to start.

 

For reference, the picture was taken from this video.
These are all fairly common parts that shouldn't be hard to find. It looks like they are a cheese slope (50746), a 1x1 tile (3070), and a 1x1 round plate (4073).



These parts are common enough that they are available in many sets, or you can purchase them separately from LEGO Pick-a-brick. If you're looking for a more affordable secondary market, you could also check out Bricklink.