Nike has combined with Barcelona to create a training video app called "Master Control." In addition, they have partnered with Juventus to create a shooting drill app called "Master Accuracy."
US Youth Soccer released a Spatial Awareness Coaching Guide which features a simple structure to guide all coaches through the steps of strategically training players U6-U19 on the tactical use of spaces on the soccer field.
Check the SF Youth Soccer Forums for additional resources.
Additional Skills and Training Resources
From SFYS President & Coach Po Bronson:
US Soccer Training Packages - include practice
plans and drills for progressive player development.