Okay, how to describe point buy.... I have it memorized, but I can't think of how to say it....
Okay, you get so many points to spend on stats, in this case 32. You start with a score of 8 in every stat, and then purchase each additional point added.
An increase of one number (8 to 9) costs 1 point each until the score reaches 14. To increase it past 14 it costs 2 points (so 2 more for 15, and 2 more for 16), and then past a 16 costs 3 points for each increase (so increasing a 16 to a 17 costs 3 more points, and a 17 to an 18 costs another 3).
A little more complex than it is, but it's how I think about it.
So for example, to get a 12, you pay 4 points (you have to increase by four from the base of 8, and below 14 costs 1 point per increase). To get a 15 you pay 8 (6 to get to 14, and then 2 more for the next increase). To get an 18 costs exactly 16 points - half of the starting total. Obviously, it really costs you a lot if you want to uber-specialize in a single stat.
Hope that helps (and isn't too complicated)