Community Colleges are excellent sources of job training and education. Contact your local community college and ask if it has green jobs training programs or related classes. This website lists all community colleges by state and links to their individual websites: http://www.utexas.edu/world/comcol/state/
When choosing a training program, it is important to find one that is connected to employment opportunities and is not too expensive. The most important thing is getting steady work once you complete your program.