Fees to look out for:
1. The banks used to automatically return cancelled checks with the statements. If your bank is still doing this and you're paying a fee for it, discontinue the service. You should be able to get a copy of your check printed on your monthly statement.
2. Insufficient funds. Make sure you keep a balance to cover you or sign up to have any insufficient funds taken from your savings account (overdraft protection). There will be a smaller charge if it's deducted from your savings.
3. Overdraft fees
4. ATM charges. Check beforehand to see which ATMs you can use free of charge.
5. If you have a free checking account make sure you comply with their criteria to keep it free. It could be direct deposit or keeping a certain balance.
If you have unexpected fees, call the bank, they may be willing to remove the fees if it's a first time "offense."