Greetings from Canada! Welcome to ECF!
It is best to try many small samples to see which flavours you like best. Try different categories, tobacco, fruit, desserts. You may surprise yourself when you find what you like. Most people start out thinking they want something that tastes like a cigarette but many soon find that they prefer something different. Choosing more than 1 flavour also helps so that you can change during the day rather than sticking with one and allowing your taste buds to get overwhelmed with it.
Relax, Enjoy!