Click the teal Upgrade button at the top of any page (or Settings > Billing > Choose a plan).
Pick Yearly or Monthly at the top of the pricing page.
Under Pro, click Get Started.
Enter your card details and click subscribe. Have a discount code? Enter it in the promotion code field before paying.
Your account unlocks right away.
Need the 40-hour RBT training? It is included with Pro Yearly, not Pro Monthly.
Buying for 4 or more people, or paying with a purchase order? Ask for a quote instead. Team pricing is discounted.