Once a skill is learned it will be with you at all times.  We can be stripped down to our skin and all our possessions stolen and we will still have our skills packed away in our brain.  It is the most valuable of all the preps but the most difficult to acquire.

Survival Skills – These will include the most important skills to know when living without the support of a modern society.

Social Skills – Living among others in a stressful environment requires specific skills to not only survive but to thrive and become a member of the new society.

Neo Skills – These are skills that no human should have now and will only be needed when there is a societal breakdown.