BBT charting

I’m just trying to decide if charting my bbt is worth it. I’ve done lots of research, but it also seems very “strict” with taking your temp at the same time every day. I guess I just have a couple questions...

Is it worth it?

Is it easy to know when you’ve ovulated? I’ve seen lots of charts from other ladies and it looks confusing.

What brand of thermometer is best? I’ve seen mixed things on these as well.

I’m just trying to decide what to do. Any help/thoughts are greatly appreciated!! Husband and I will be starting our TTC journey in 2 weeks 😌