Hi, I am a total novice with a Canon 550D and an interest in macro.
I have never used any software to adjust my photos, (because I don't know how) and I have always used jpeg. I would appreciate any responses / help /advice re using raw. I have only heard of it never used it or even tried to - advantages? disadvantages? Or should I stick to jpeg and the software that came with the camera, whilst I am still learning manual settings and before I purchase Photoshop or similar to use with my Macbook computer?
Hope that is not too many questions, it is just what I am currently wondering.

thanks