I'm going to start charting need advice?

Reading thru how to read the charts (confusing) and thru posts for information. But it's a lot.

Do y'all prefer to temp vaginally or oral? I know it needs to be consistent, didn't know which to stick to.

If I'm understanding right...when you ovulate there's a dip in temperature the day before followed by couple days of elevated temp?

So I'll take opks to know when I'm about to ovulate, making sure to be having sex ..then look back at my temperatures and should be able to know which day I for sure ovulated?

Honestly any tips would be appreciated 😅 I don't wanna stress myself out with tempting/charts BUT I want to know if I'm actually ovulating to be proactive in case I need to get to the doctor.