Hello, I'm new to SketchUp. Can not understand in V-Ray. Display the image in V-Ray and I disappear texture of the roof and the picture on the poster store. What am I doing wrong, tell me, please.

Hello, I'm new to SketchUp, and can't figure out how to make a through hole in the window frame, before I get pushed by the push pull tool to the brink and I got through hole(see picture 1).
Now in the wall began to do the window and can't do a through hole (see picture 2).
What am I doing wrong, tell me, please.

Thank you!!!

Hello, I'm new to sketchUp, can't put exactly the component(box), please tell me how exactly to put the component to the desired location.

Thank you, thank you very much

Please tell me how to remove the pop-strips?

Thank you very much for your help!

Hello, I'm new to SketchUp, please help me to understand, I have a problem with the plugin round corner when choosing lines I get this: picture 1
when confirmation is obtained incomprehensible figure: picture 2

Please tell me, what am I doing wrong, thanks in advance.

Здравствуйте, я новичек в sketchup, помогите, пожалуйста разобраться, у меня проблема с плагином round corner при выборе линий у меня получается так:

при подтверждении получается непонятная фигура:

Скажите пожалуйста, что я не так делаю, заранее спасибо.