Summary: There are several online resources available to help you monitor your finances.
Mint is a great resource for helping keep your finances in one place. It allows you to create budgets and track all your connected accounts.
Major Credit Bureau Sites
There are three credit agencies that collect information about your credit and financial history. You can request a free report from each of these agencies once a year.
Credit Monitoring Sites
These two sites are paid services that will help you monitor your credit.