Congrats. I haven't found many good windfoilers that didn't first master Slingshot Hoverglide

Learn to keep your weight on the front foot esp when flying
for your first getting to foil sessions I reckon mind rigging a bit bigger so you don't have to worry much about sail pumping. slog upwind a bit and bear off until you start to lift off, keep weight on front foot, and turn upwind to kill enough power so that you have level flight.
To land step forward/and or turn up wind.
Slog back downwind
After the first few stable flights then rig down and focus on sail pumping on a beam reach (unless OP). Once your up you can go upwind or way downwind to kill off power as needed