There are three main kinds of debt consolidation loans. If you are a student and had taken loans to pay for your education, you are eligible for a student debt consolidation loan. Almost every student loan can be consolidated by this method, the most important requirements, are that you must be already graduated to apply, and your loans have to be either in their grace period or already started repayment period.
If you are not a student, you have one of two choices. If you are the owner of your house, you can apply for a home equity loan, which is a kind of secured loan based on your property. It is generally the least expensive option in debt consolidation loans.
If you do not have a property, or you do not want to use your house as a way to secure your loan, but still want to consolidate your debt, you can apply for an unsecured debt consolidation loan. This is the easiest option if you are not a homeowner, but it will be always more expensive than a secured loan, since you will be paying higher interest rates and fees, as no collateral are required.