What is a painting medium and how do you use them?

Question

 

I am new to painting and i don't understand the concept of painting mediums. Do you put them on after the painting is done? like how do i use stand oil....i dont get it.

 

Answer 1

Love may be imperfect for your birth, it springs up stronger-hitting as we grow old when it's well fed. gucimarque http://www.gucimarque.fr/