Tips for Ovulation testing?

So after TTC for nearly a year, then miscarrying, and struggling to get pregnant again, can anyone shed some light on these? I just ordered them. How soon after my current period ends should I begin testing using these strips? Will I only get one peak? How soon after a peak/surge should I have sex? I have no clue how to go about this process, but I want this process to help/work! Thanks in advance !