Never Show Up in a Shirt and Tie
Never turn up in a shirt and tie. What this implies, is that you would rather be somewhere else and not really 100% committed to the cause. Shirts and ties belong to work. When it is time to play with the kids, turn up in jeans, a t-shirt and a baseball cap. Come down to their level and be part of the gang or you will never get the best out of them.
Make it Fun
You are not gunning for the World Series. So it is really about bonding and having fun with the kids. Ask for suggestions about what name should be given to the team and any ideas they might have about the mascot. Let them work together and realize the importance of group activity and team building. When your coaching skills resemble a military drill, kids tune off and would rather be found doing something else. Expect most of the kids to defect.
Forget the Mumbo Jumbo
Teach them the basics of baseball in a way they would enjoy and understand. Use everyday things to explain how to play baseball. Kids learn faster in between the giggles and the laughs. And will easily pick tips and strategies, if you use things they are familiar with. Do not use gaudy grammar or weighty words. Make it look to serious and its school all over again, maybe even worse.
Do Not Embarrass Publicly
Children do not have thick skin. So despite things not going as planned, never verbally bash a child in public or in private for that matter. If a child has an attitude problem or is not exactly playing his position, call him aside and tell him what he's doing wrong or how a change in approach can make everything much better for the team and everyone else.
Man of the People
Do not set your sights on the kids alone. Also try to parley with their parents. Encourage them to come and watch their children play baseball. Be friendly with the kids. But you can play boss with the parents, by knowing when their kids are coming for practice or when they will be going home. If there are any issues, meet in person, never talk over the phone. It could compound whatever situations that might arise.