I agree with
frankiko, have in mind that inDesign is a software created to do Magazine and Newspaper Layouts and some Vector work. You can't go wrong if you use Illustrator or Corel Draw; when I began with the Graphic Design I started using Corel Draw and FreeHand, there was no Illustrator back then, I use Mac too, and I love Illustrator as a Vector friendly software. Just try to get use to.
When working with rasterized images and need to apply some gradients or some layering opacity effects, you definitely need to go with Photoshop.