How many layers is recommended and how far apart should they be?

I have long, multi textured hair, including 3C in the crown/front area and on the very bottom near my neck, and 3A, 3B, and 2C in the center. My roots are needing volume and I currently have what is known as the triangle/christmas tree head. I've only gotten trims but never really gotten a real hair cut style, so based off my different textures, I'm nervous. My town does not have a stylist who specializes in curly hair, and finding one means having to drive for miles. Can someone help me explain to a stylist, how layers should be cut in my hair.