Realize that you don't have to be experienced in construction to enroll in a carpentry trade school.
Research the schools in your area. If there is not a carpentry trade school near you, check out your local vocational, technical or community college. They usually offer courses of training in carpentry.
Find out what the curriculum includes. Look for courses that include basic math, estimating costs of jobs in time and materials, use of equipment and tools.
Decide whether you want to pursue residential or commercial carpentry as a career. Residential carpentry can be more artistic if you are the creative type. Commercial carpentry may require more and different types of skills and certification.
Pick a carpentry trade school course that will prepare you for the type of carpentry you are interested in. Some schools and courses offer both residential and commercial training. You study how to install drywall, windows and doors, frame houses and install roof systems. Some schools teach scaffolding specialties for commercial sites.
Consider online training. You can pick a course online that teaches all the basics of the carpentry trade, including how to read blueprints. Online courses in carpentry also offer certification upon successful completion.