Free Online PD offerings from ProLiteracy and World Education, the portal for online professional development brought to you by ProLiteracy and World Education has high-quality trainings to share with adult educators. This website and these trainings offer you the opportunity to explore evidence-based practices that you can use in your work with adult learners. Some of the categories these courses fall under are: 

Adult Multiple Intelligences

Authentic Contexts

College Transitions

General Educational Development (GED)

Managing the Learning Environment

and many more categories with numerous course listings. 

For a complete listing of categories and courses