OPK help

T • Mama to a miracle🌈 6/8/21

Okay, so I just ordered OPK’s and I get the overall gist, but just a few questions if someone with experience could elaborate for me!

1. What time of day should I take it? Once or multiple? I’ve heard AM is bad time to take them.

2. What day should I begin taking them? I usually have a 29 day cycle but occasionally it gets to 30-31 days.

3. When you get a high/peak, how long after do you ovulate? How much should I BD after that?

Thanks!!