My Housemate is a Beauty Therapist, and she says that a make up lesson is worth doing, not just for the date, but for future nights out etc, as long as you go somewhere reputable. If your in the Preston, Lancashire area, my housemate would do it for you at a very reasonable rate and she is excellent!
But, if you went to somewhere like Boots, the Clarins, Estee Lauder etc counters, will show you how to apply products for free if you were planning to buy them, as this is one of the main ways the staff sell products, by demonstrating how good they are. Good luck!