Hair Colouring advice

I'll be going to dye my hairs for the first time so I don't know which colour will suit me as I could not find much reference online. I naturally have black 3B curly hairs with a tan skin tone kindly suggest which colour dye is gonna suit me the best and if I should dye my whole hairs or just the bottom or highlights or maybe just the bangs kinda thing or any mix colouring