iSoccer Skills Assessment videos. 16 skill tests in 7 topic areas. If you can measure it, you can improve it. Download a paper guide with field setup instructions in your coach account: http://www.isoccer.org/Team/AboutAssessment.aspx
Coaches use anywhere from 1 to 16 parts of the iSoccer Assessment to challenge their players' skills. A good place to start is with the "iSoccer Six," then you can move on to the other 10 parts of the Assessment. Of course, different coaches prefer different parts of the Assessment.