How wiring directly arduino mega to STM32 3.2 inch HD TFT LCD Touch Color Modul

Hi
I will try to follow your advice

But first I will try to cable it directly to the mega even if it will take me another month.
I want to learn, and as the French proverb says by force of forging will I become blacksmith? We'll see ! may be.

dear Mr. David.

Thank you for your answers and advice