Help! 1st time using opks

Ph

Hi so we've been trying to conceive for #2 for 7 months, unfortunately miscarried in March.

First baby took 4 years to conceive but didn't use opks.

Just got some opks and going to start them this cycle once my period ends.

Anyone got any advise for a opk newbie? Anything I should or shouldn't be doing, seems a bit of a minefield! Xx