assign textures

hello!! I just buy an item:

Bouquet of various flowers

I need it to use in an animation render.. The geometry is just fine, but I don't understand at all how to apply the textures, to get the same textured render than on cg trader site... As I work in cine 4 d, I use the obj version, and have downloaded the textures, but it doesn't work...Well, I can't do it working, I suppose, I don't know how to do: If I apply the flowers texture, the leaves are of the same color, and so on... If somebody know thjat product? thank you for help!!!!