My biggest suggestion for the HELM station is do NOT stay at one speed in combat. I have been piloting starships in computer games for nearly 20 years, and I have seen so many inexperienced pilots make the mistake of maintaining full speed during combat. You make tighter turns at lower speeds, and wider turns at higher speeds, so depending on where you are trying to go, and when you want to be there, you adjust your speed to fit your goal.
HELM is, I think, the one station that requires the most skill/talent to be useful. An inexperienced pilot WILL get your ship killed unless the captain can give helpful orders to him/her. Try to pay attention to how your speed affects your final position relative to the enemy, and make adjustments next time.
A good pilot will be able to look ahead and figure out where the enemy is going to be and plan to be at a location that will intercept the target shield facing, or stay out of the weapon arc, or whatever the plan is. You CANNOT pilot on a moment-by-moment basis, you MUST be thinking ahead.