Our Junior U9s to U17s 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...
For an outline/ introduction on Umpiring the ECB provide a "Basics of Umpiring Resource" online course - https://booking.ecb.co.uk/c/express/911c7453-1d2a-45d1-9ab3-6ccd86e666b8
For an outline/ introduction on Scoring the ECB provide a "Basics of Scoring Resource" online course - https://booking.ecb.co.uk/c/express/501245fd-e917-45e8-827e-f14d10a1d0cb
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