SteveG posted a simple toe measuring device that can be homemade (I did it). You need to have the car on the ground and roll it forward a few feet to set the suspension. Then measure distance between front of tires and then rear of tires. Should be 1/8" toe-in according to book, but some say set at zero.
If you need to adjust, pull up on wrench on both lock nuts on the steering bar to loosen (one is reverse threaded), then twist/turn bar to correct measurement. Tighten lock nuts by wrenching in downward direction.