New to this, questions about ovulation at home tests

Shea
So my husband and I have only been TCC since August. I got pregnant with #1 5 years ago by accident when switching birth controls. So I thought it wouldn't take long. My question is, when do you take the tests and how often. I understand my cycle and know my fertile days, but I read that the test shows an LH surge hours before ovulation so do you only take them on the most fertile day or the day before or a couple times a day??? HELP.