Beer Pong Table Blueprint How Do You Put Holes In A Beer Pong Table For Cups?

How do you put holes in a beer pong table for cups? - beer pong table blueprint

I am interested in building a beer pong table. Be selective about how people Cups rack, I have to move holes in the table, not that the cuts.
1) What is the best way to make holes in the table? (Will probably be cheaper with wood from Home Depot / Lowe 's)
2) I want the glasses to half of the table. What is the best way to align the holes for the cups to create a grid right?