No. Checking accounts in general do not usually earn interest. Especially free ones, if you want to earn interest, you should check on different savings accounts and check with your bank.
A secured promissory note has collateral attached - usually an item/items of value or a deposit. If the note is not fulfilled, the creditor can seize the collateral as payment. An unsecured note has...
No more than 10% if it's for personal uses (which doesn't include work on real property), and this does not apply to notes under the Bank Act, Building and Loan Act, or Agricultural Act.
You can make your own note. Just make sure you write down the VIN number and how much you have agreed to pay on it. Also it would be wise to list the condition that it is in and on the back of the...