The Game Box Score's Survival Guide

I don't understand how they expect people to be able to comprehend the meaning of the column headings. Anyway, the meanings are as follow:

POS. Basketball player position. There are three tactical basketball positions: guard (G), forward (F), and center (C). However, since the 1980s, more specific positions have evolved.

MIN. Minutes played in the game.

FGM-A. Field goals made versus attempted.

3PM-A. 3-point field goals made versus attempted.

FTM-A. Free throws made versus attempted.

+/-. The plus/minus rating. It measures the team goal differential when a specific player is on the court versus when he is not.

+ / - Rating = On court Points - Off court Points

On Court Points= Team's net points ( Pts scored by team - Pts scored by opponent ) with the particular player on the floor.

Off Court Points= Team's net points ( Pts scored by team - Pts scored by opponent ) with the particular player off the floor.

OFF. Offensive rebounds.
DEF. Deffensive rebounds.

TOT. Total rebounds.

AST. Assists.
PF. Personal fouls.

ST. Steals.
TO. Turnovers.

BS. Blocked shots.
BA. Blocks allowed.

PTS. Points.

Note: DNP, when it's located next to the player's name, means "Did Not Play"