before reading here
Diversity Visa - List of Occupations
you should read here
Diversity Visa (DV) Lottery Program
in particular:
Qualifying Occupations
The law and regulations require that every diversity visa entrant
must have at least a high school education or its equivalent
or have, within the past five years, two years of work experience in an occupation requiring at least two years' training or experience. To learn more about qualifying occupations, see the Diversity Visa Instructions Frequently Asked Questions and the List of Occupations webpage.
So if you have an high school education is sufficient to get a GC (obviously if you win.....
).
Hope this help