Similar to when you match certain colours that go together, certain fragrance families go together as well. The scent wheel makes it easy to see this.
Fragrance subfamilies that are side by side on the fragrance wheel will almost blend well.
You can also pick a sub-family to start with and see which note appears across from it on the fragrance wheel. This means that those notes are complimentary to one another. For example soft oriental will compliment citrus and oriental will complement water.
You can also select three fragrance sub-families that create a triangle on the fragrance wheel.
You will find that these compliment each other nicely. For example, if you like floral oriental notes, look for a scent that contains mossy and water notes as well.
After you have decided which families you like best and what secondary notes you will be looking for, it is time for you to start researching the perfect perfume for you.
You could go to a local perfume shop or you could order fragrance samples on line. You must however be sure to test them on your skin to ensure you are still happy with the scent.