The careers for which the University is necessary are: Architect, Agricultural Technician and Geologist.
The repair technician, depending on what he repairs, may also need to pass through the University.
Solar panel and repair technician. A solar electrician begins by obtaining an education through a certificate or an associate's degree program available at a community college or professional school while obtaining relevant work experience through an apprenticeship that involves performing solar panel work.
Pipefitters usually start as assistants or apprentices. The requirements differ from state to state, but most include four to five years of apprenticeship.
The cabinetmaker is, above all, an artisan. An artisan is the person who makes handicrafts or crafts. Artisans do their work by hand or with hand tools, so you have to have some skill and ability to do your job.