Western Sussex Youth Soccer Association: Links
Information on concussions and head injuries.
Training Videos and tips on how to improve your soccer skills.
Coaching Soccer 101
Has some nice games you can pull from to assist in improving particular skills. Sometimes not the easiest to follow, but good skills set in place.
Soccer Drills, with animation to show you how it is supposed to happen in practice. Can pick your area of need, and a rating of easy to hard.
Has practice plans prepared to assist in laying out your practice on an age appropriate level.