FAR Part 107 describes the process of obtaining an Unmanned Aircraft Systems (UAS) certificate. Airman Certification Standards describes the process, which involves taking a written examination by computer at an authorized testing location, and there is no practical test (checkride) involved. The FAA has provided a study guide, an online course, and a sample test. For certificated pilots, the process simply involves completing the online course with an end-of-course exam.
Once you pass the test (or complete the online course for certificated pilots) you can immediately print your UAS license, and the permanent license will be mailed to you a short time later.
Getting a UAS license may be an excellent opportunity for new and aspiring pilots to gain an introduction to aviation.