The recent Safety Briefing offers a offers a simple guide on getting your remote pilot certificate for commercial drone use. It offers steps to understanding your eligibility. Offers guidance on where to study using the free FAA resources, or even mentions where to get help from FAA volunteers. Direction is provided on where to schedule and pay for the test. How to get the required FAA Tracking Number, and what items will be necessary to bring to the test. The last part is the easiest, pass the test, complete your application, and take a free online training course every 24 months to keep your certificate.
Just in case you need to retest, that can be done after 14 days
Find the full article discussing the steps necessary on page 32 of the FAA Safety Briefing