If you are a younger teen (14 or under), and only have a few years of experience, I'd charge about $5 an hour. If you have to take care of more than 2 kids, I'd charge $.50 extra per hour per kid.
If you're an older teen (15 or older), and have more experience, than I'd charge about $6. Please note that regardless of your age, you should add a dollar to your hourly rate if you are certified in CPR and First Aid.
Here are a few tips of mine on advertising for babysitting:
Never put flyers inside of people's mailboxes because it is illegal. I would advise putting them in their newspaper holders instead.
Also, I wouldn't advise posting flyers or handing them out to strangers, because some strange weirdo that doesn't have any kids could call you and you could be in serious trouble.
I pass them out to people that you know, like friends, neighbors, relatives, your parents' co-workers, .etc.
The best and most-trusted form of advertisement is word-of-mouth. But, hear this, customers are 3 times more likely to tell other people about a bad service than a good service. So make sure that you offer a great babysitting service and try not to make a customer mad, because it will come back to haunt you the day that you have no customers because they told everyone that you were a bad babysitter...
I'd also buy some business card magnets at an office store or at Wal-Mart and make some business cards to put on the magnets to hand them out to people that you know. This way, parents will always no who to call when your business card is a magnet on their fridge...
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