What are oil pastels used for?

I've seen many artists used this white tool to blend in oil pastels, and i don't know what it is called! It would rlly help if i knew the name of it :S Also would oil pastels work well with acrylic?

A few months ago I took oil pastels to my wall. Now I'm about to repaint, and I've used a mixture to wash off the pastels, but I know that oil based products leave a residue, and I'm wondering if i'll be able to paint over the area, or if the paint won...

I have this huge canvas and I hate what I made with it, can I go over oil pastels and some chalk with acrylic paints or will that ruin it? will the paint even stick to the oil pastels? I dont wanna ruin the canvas as it is, but if I can make something...

I'm trying to en cooperate different types of media in my art, and I'm unsure of how this would look or turn out. Advice? Also, advice on what type of paper to use?

I love art and drawing, but I only really use pencils and I want to start using pastels. I used them at art club once and I just loved the effect and everything about them. What would be the best ones to get for someone that is only beginning to use...

I'm an artist an I usually paint. But I wanted to try oil pastels. I know calle crazy an artists who has never used oil pastels. So anyways here are my questions... 1.What should I store them in the package they came in is terrible. I looked online and...

I like to draw, and I recently read a book where a girl used oil pastels frequently. I want to expand my art skills, should I use oil pastels?