Hi Stephanie,
Best thing to do is download the ovia app, this was such a life saver for me. You input your period dates and it works it out roughly for you, as in when your fertile period might be - when the egg is getting ready basically.
If I remember correctly it will highlight maybe 5 days on a monthly calendar, so maybe test a day before that and see what you get, its a bit of trial and error, but the second line should get darker, your peak is when both lines are exactly the same, that's when you really need to get the
in
They say you will get the best result at 2pm, but for most of us it is convenient to test then, and they say test 3 times a day, to really make sure you don't miss it. I personally testing at 8pm on 2 days in a row and my peak was then - everyone is different.
You can also tell when ovulation is close by your cm, more ewcm, so like a stretchy kind of gluey consistency - this was my sign. Now I am not saying you need to be routing around in there, I would notice mine in my underwear, so I knew it was close.
In time you will kind of learn how long you cycles are and when roughly you might be ovulating, for example CD16 or CD17. Generally 14 days before your period is due, give or take.
Hopefully that makes some sense.
Wishing you all the best for this journey
xx