You can find all customer support training articles under the following category
Answers should be categorized into Common Problems when the answer is good enough and it deserves to be added to a category.
When a lot of answers are related to 1 area the area should be placed as a subcategory of Common Problems
eg Payment Problems, Installation Problems, Uninstallation Problems, Activation Problems, Settings Problems, etc.
Here go all answers to be categorized in the future