I am generally lost too when it comes to female fragrances.
When I am in that situation, I check the bottom of the opening screen where there is a list of the most popular women's and shared fragrances. I pull up each review. If it sounds interesting, I check at the bottom of the review to see what other fragrances are liked by the people who like the fragrance I am reading about.
Before you know it, you are learning about a lot of fragrances and one (or more) will click with you.