I used the AUTOMATIC1111 gui for installing stable diffusion locally on my macbook, here:
https://stable-diffusion-art.com/install-mac/#AUTOMATIC1111
you can find example prompts on
civitai.com to get a feeling for writing prompts, the first site I linked also has a guide
you can download lots of other models on huggingface for stable diffusion, and you can also use the AUTOMATIC1111 gui interface to hybridize models.
there are models that try to closely emulate midjourney, for example.