This is a tool I use professionally for any gifs I have to make for the games I work with, its very simple and has complex function you can use as you get more confortable with it, best of all its free!
http://blog.bahraniapps.com/gifcam/
Additionally if its something you find helpful I highly suggest going back to him and donating a couple dollars, I know he has made a world of difference in what i do.