Ovulation tools

Melissa • Married 9/16/2017 💍 - TTC since July 2017 🤰- two step sons 🙋🏽‍♂️🙋🏽‍♂️ and two fur daughters 🐶🐶

So I just got this today - I am super excited to use this - and I get this but is there any tips you can give me -

Thank you girls