If you have a mold problem in your home, then you should handle it as quickly as possible. However, you can't just rush in without any preparation, since mold is both dangerous and persistent. To help you out with that, here are some considerations to make before you start the removal process:
Find the Source
The first thing that you need to do is figure out where the mold came from. In most situations, mold simply grows where there is a wet, warm, and dark environment. Plumbing leaks can often lead to this exact situation, adding some water to an area that is already dark and potentially even warm (inside your walls and beneath your sinks).
You'll want to fix any potential leaks as quickly as possible, because they are simultaneously costing you money and creating the perfect breeding ground for more mold. Even if you remove the mold, leaving the leak alone could lead to another moldy situation in the near future. For more information about finding and repairing leaks, consider contact a plumber like those at http://www.knightsplumbinganddrain.com/.
You also want to make sure that you are sufficiently equipped before you dive in. You'll want to make sure that your skin, lungs, and eyes are protected.
Covering up with long-sleeved shirts and pants should be sufficient for protecting your skin, but you want to make sure that you are wearing a thick material. You also want to wash those clothes immediately after cleaning up the mold, unless you plan on throwing them away instead.
Protecting your lungs will require a little more effort, since you will need to wear a respirator. A basic surgical mask won't do, since it doesn't actually filter out mold spores. You might need to head down to a home improvement store in order to get an industrial respirator that is meant to filter out extremely small particulates. It may not be comfortable to wear, but it's a lot more comfortable than the alternative of inhaling mold spores.
Finally, you'll want to wear goggles at all times when working with mold. Simple glasses won't be sufficient, since they don't cover your eyes from the sides, top, or bottom. The problem with mold isn't that you need to protect your eyes from flying debris, but rather than you need to keep your eyes safe from the microscopic spores that are floating around in the air. Glasses don't really pose an obstacle to a threat of that nature, so you want to make sure that none of that air gets near your eyes at all, and goggles that form a seal are your best bet for that.