Our Junior U8s to U15s sides will need help from parents to help oversee the matches they play. Sides will need Umpires and Scorers so that matches can be played.
If you can help but need to know the basics involved (or a reminder of the LBW law!) the ECB provide two online courses...
A useful place to find more information on the laws of cricket, including all you wanted to know about No-Balls, Byes, Leg Byes, etc, can be found on the MCC website here. The MCC App is very useful and has Animated Video guides for the most common Law queries plus Videos of all umpire signals - https://play.google.com/store/apps/details?id=org.lords.lawsofcricket&hl=en