You have three options for registration.
From my point of view, the last two options are really useful, because you get at least 25% discount on your order.
1. single order:
Without registration but also without discounts or bonuses
2. wholesale customer:
With registration you will get 25% discount on all products for personal use.
3. independent product advisor (Wellness Advocate):
You get 25% discount on all products and also have the possibility to receive commissions if YOU distribute doTERRA products yourself or even if you only recruit distributors. If you are still unsure, you can upgrade your membership account from Preferred Customer to Independent Product Advocate for free.