Help!!!

Okay so hubby and I decided it was finally time after two years to start trying again. Only now I have no idea what ovulation strips are best to use/most accurate and appreciate any and all advice! I’ve tried using this app and several others in the past and it didn’t help so we decided to track ovulation this time around. Also advice on how they work is a huge plus!! I know to wait until both lines match each other in color/darkness but don’t know if when they are same if that means I’m ovulating or if I should wait until the day after? We will also be trying preseed for the first time and experience on that is helpful as well!! Hubby’s sister is preggo and recently found out she’s a carrier for CF, which has my husband worried that he might be a carrier. Am a newbie to the whole TTC aspect and need as much help as I can get!