Safeguarding My Important Computer Data

Now that I am a lawyer, I really need to safeguard my online data. I have had computer crashes before and have lost all my information. That was bad enough when it happened in school, but now that could be disastrous. You have to safeguard your clients' data--to lose it would be unthinkable. I am thinking about looking into online backup--I hear that is the easiest and is also affordable.