Newbie 👋 need some help 🤣

I'm just wondering if someone can please explain to me, and maybe show me some charts and explanations. I've literally starting temping yesterday with a bbt thermometer, I'm due on my period in a few days. Wanted to get the hang of it and see the results right from the beginning of my cycle.

So can someone explain kind of, what should it look like? When should I expect a temp rise or a temp dip? What would be classed as unusual? What is classed as normal?

Literally any advise/examples would be GREAT!

Thank you 😊