I need help with my opk’s

Ok , Iv never been committed to getting pregnant . But now I’m starting to use the ovulation strips . Top one is from yesterday & bottom one is from today . So here are my questions .....

have I already ovulated ?

I know it’s to soon to tell but are my lines getting darker ?

Should I test every two days instead of every day ?

Is it better to test in the morning or at night ?

Should I start testing as soon as I’m done with my period ?

Last ........

SHOULD I FOLLOW GLOWS PREDICTION OF MY MOST FERTILE WINDOW ?

Please I need to know everything there is to know about using opk’s