Good morning
I don't fully understand your question. Are you asking about the illustrative and/or photographic aspect, or the software used on many images to correct colour/hue/tones/contrast etc.? If the latter - a camera, a computer to get the images where they are usable, some software (Darryl has given a link above - I tend to use four different programs depending on the result I want/get) and your connection to the internet to upload the images. If the former, I am afraid I have no experience, so cannot answer.