You have to choose your own cards. Go through the deck card-by-card and pick out two or three that resonate with you. I would suggest splitting your rituals into two: one for money and prosperity, and the other for peace and serenity.
You can carry out a ritual any time that is convenient for you. If you want to add a little extra oomph, you can do the rituals during the time of the waxing (increasing) moon, or during a full moon.