New to this whole healthy lifestyle! Help!

Hi, my name is Mitzi and I figured why not tell people a little about myself and maybe get some motivation and tips s going! I'm 24 years old, 5'9 and currently weighing in at 225 (the highest I've ever been at). I decided 4 days ago that I was fed up with living this unhealthy lifestyle and I wanted to change my diet and lose around 65 pds. I know that it will take time and patience and with the help of people who have been through it and have overcome the obstacles and everything that is hard about this process will really help me out so much! I'm definitely excited. I am not trying to diet but simply lose weight by just eating right and knowing what to eat and how to eat it (as in cooking). I'm nervous about this whole thing but it won't hurt to try right! Any suggestions or tips would be greatly appreciated! I will try and keep up with my fitness pal and logging in everything I am eating throughout the day. So with that being said, it'll be nice to have some friends on here to help me stay motivated!!! Also, I have no idea where to start with the "exercising" part so if you have any idea I would love to hear your suggestions!