TTC for the first time

We been not really trying for the last year but definitely not been safe, and haven’t ended up pregnant so we want to actually track everything this month to make our chances higher, with that being said… how do I start this🤣 My period stopped today, and according to the app my ovulation starts in 15 days. When do I start taking ovulation tests, and when is the best day to “baby dance”

Thanks everyone 🙂