>>49958254
At the most basic you need two elements: an interface (the other anon suggested ComfyUI or forge-classic, I use reForge as I am a noob), and a base model (Illustrious, NoobAI, any sort of fork of these - whatever suits your boat)
Read the model's suggestions for settings including prompts, the guide the anon above linked, and get to experimenting - do not expect to get a good result in your first batch