how i can apply a bump/normal map to my model?

[micheus]

I was mistaken import my image multi times so, how i can remove my mistakenly multi-imported images?

In the Outline window you select the image and using the Right Mouse Button [RMB] you'll see the option Delete.

If you are new to Wings3D I have these tips for you:
- Always pay attention to the Information line (that one in the window bottom) - Wings3d "talks" to you by using it!
- You will read many posts/articles with abbreviations for mouse buttons like this: LMB, MMB and RMB. Wings3D uses them for different tasks. Also, some menu options use them for different actions. (again, look at the information line);
- take a look at this post for informations about some tutorials references;

Welcome.