Will you help me?

Hi ladies!! Ok so I'm very new to this tracking ovulation and I need your help to figure it out! Just a little back story.... I'm 26 and my husband and I are trying for baby #3. I never did the ovulation test while trying to conceive my first 2. But we are having some trouble conceiving this time around! So I ordered some test strips and plan to start testing tomorrow! So my question is how many test should I do a day and around what times..... and for how long? My period just ended yesterday and are very irregular! Your help is greatly appreciated!