I've never built any electronic gear but I will take a stab at this. Each column is a list of the parts required for this project. It looks like there are 16 caps, 20 resistors, 1 semiconductor and 3 switches. Each part is labled with a component typed (c = capacitor, r = resistor etc.), and a number that should correlate with the schematic. If you find C1 on the schematic, that should be the location of a 15n capacitor.
I would say you need to go through the list and count up how many of each component you need ie. 2 15n caps and 4 47n caps etc.