Maca is a root that grows high in the Peruvian Andes at altitudes of 14,000 feet (3500 m) above sea level. It has been cultivated for 1000s of years and used by indigenous people to boost their energy while living at such extreme elevations where oxygen is in short supply.
You can start working as an engineer with a 4-year college degree. Many engineers go on to earn masters degrees (usually in another 2 to 3 years), and some get a Ph.D. (4 to 6 years beyond the bachelors degree).
If you pass and graduate then you can be a licensed EI (Engineering Intern) that works under the direct supervisor of a licensed PE (Professional Engineer). You will work about 3 to 4 years under a PE until you get enough enough experience to take the PE exam which is another 8 hour beat down test with a 64% pass rate. If you pass then you can become a licensed Professional Engineer that can work without supervisor and are able to sign and sealed engineering plans.