Getting started
What perfume should I buy first
Buy for the occasion you encounter most often. If you are unsure about your preferences, make your first purchase a set of samples rather than a large bottle selected only from online praise.
A HUME Fragrance buying guide

Choose the job before the scent
Ask whether this purchase is mainly for work, study, social evenings or everyday enjoyment. A first perfume does not have to cover every possible setting. Solving your most frequent need makes the decision easier.
Try a small comparison
For a daytime brief, compare a citrus or marine direction with a woody or floral one. If you already know you like sweeter smells, include one sweet option rather than excluding it because a beginner list says otherwise.
Choose a manageable commitment
When one fragrance clearly wins after repeat wears, look at its available sizes and price. There is no requirement to buy the biggest bottle. If nothing wins, refine the shortlist instead of purchasing simply to finish the search.
Try this before you buy
Complete this sentence: I want my first perfume mainly for ____, and I want it to feel ____.