I hear you. I haven't had physics in 20 years and remembered something that helped. Maybe it'll help you. I'm in the units/kinematics area right now so here's what worked for me.....
As you read the problem, write down what you're given in terms of variables (velocity,acceleration,time, initial velocity, etc). Also write down what you're asked to solve for. That should help you figure out which kinematics formula to select and go from there.
The big problem I was having was in setting up the problem.
Where are you taking your prep class at? I'm taking the one in Dallas (obviously).