If you are going to make your own logo design, then you need a good photo editor and an idea.  The best editor to use for a logo is Adobe Illustrator.  This will keep your logo sharp without pixelation.  If you use photoshop, then you will be limited to using your logo on the web.  Illustrator files can be used for brochures, shirts, cars, and just about anything you can slap a logo on.

It is best to draw out your vision on a sheet of paper before going straight into Illustrator.  When you are laying out your vision on paper, try and remember that you want to keep it as simple as possible.  When you look at the logos of Fortune 5000 companies you rarely see something over the top.  Their logos usually use 2-3 colors and have text with one image.

Once you draw it out on paper, then you need to identify the exact HEX numbers of the colors that you will be using.  Start with your primary color.  Then take it to a color wheel online.  From there, you will be able to identify complimentary colors associated with your primary HEX. 

At this point, you can either attempt to do it yourself in Illustrator or find someone who will do it for you.  The drawing and the colors will make it easy for a logo designer to translate your vision into an exact and precise logo.