- promptmuse.com

A very good website with lots of useful information for beginners

- civitai.com

repository of models

- Lexica.art

Browsing various artwork and seeing their prompts, very fun to navigate this website and learn the best prompts to generate attractive AI images.

- promptomania.com

Once you have a prompt, this website will assist the prompt with various tweaks, like style, lighting, etc ...

- artbreeder.com

I would recommend this website for a quick introduction to generate AI artwork

using collage and a picture source or just a simple prompt

- midjourney.com with showcase/recent/

This website is a good suggestion, but not for starters ; as the way to generate artwork is via discord, and seems like a lot of extra steps compared to artbreeder or stable diffusion.

The midjourney generated artworks are gorgeous though