I would suggest Jerry Petigue's videos. Our club has been using the bulk of his stuff for the last two years and we are starting to develop some very good junior players.
I would suggest that you don't limit yourself to just these videos but have a look around the net for some websites that can also help you out with some great drills and ideas. Even better is they are free!
These 2 sites are really worth checking out.
[
www.coachesclipboard.net]
[
www.akcoach.com]
My main tips for you are:
1.) Keep everything as simple as possible.
2.) Change your drills often and keep them short as the kids have short attention spans.
3.) Devise some games for them to play after every few drills which will help them to work on the skills that they have just been practicing.
4.) Keep positive with them but do not be afraid to punish them quickly if they step out of line. I operate a 3 step philosophy:
a.) Warn the player(s) who are creating a distraction that there will be consequences if they continue their actions
b.) If they continue then have the whole team run. This creates peer pressure on the player(s) to fall into line rather than creating a battle of wills between yourself and the player involved.
c.) The sin bin. If they still continue then have the player sit at the sideline for a period of time. If it gets to this point then you need to talk to the player and address the problem early before this becomes a regular occurrence.