Hello. I'm not major in optimization method, but I did solve some optimization problems by GA using MATLAB. You can use the GA toolbox in MATLAB. If you just want to use this toolbox, you can see the "help" documents. There are also a lot of information on the internet. If the optimization problem is not very difficult, I prefer the GA's GUI tool in the MATLAB. Type "gatool" and you can find it.. It's more convenient to use it. Good luck!