Buy a bilge pump, get a tow rope that you have access to while floating (wrap it around your waist). limiting rope will keep your pole from snapping off if you lose control and it bottoms out at the bracket putting all the force against your nose. Hood strap to ensure you do not lose a hood and sink your ski.
Make friends to ride the waves with. Other than that you are set for some fun.
I rode the past 2 seasons without a limiting rope or hood strap and it forces you to ride conservatively if you dont want to break stuff. Don't be like me and just get it done right away!