DON'T TOUCH SA's!!!! Wait until you reach level 40.
Learn about slow building. A guard benefits immensely from a slow build. It means not spending points until you do some training and have enough points to bring a skill up to 1st cap, 48 points.
Strength and blocking are your two most important attributes. Some others, while they will help your build, don't even come close in importance. The pee-wee game is all about running, so strength will help a lot.