MissLiCh, I think by Junior College level, he is probably beyond learning new ways of compensating for any learning disability. He has managed to make it to Junior College so he is doing pretty well. He will probably find a career that he feels comfortable with and do just fine.
Love him for his accomplishments with his limitations. Part of marriage is loving your spouse as they are. I don't mean that to sound preachy. I know you only want to help.
Many people have marriages where one spouse excells in some areas and they are responsible for those and the other spouse excells in different areas. It makes for a great partenership. Best wishes for your life together