Paints That Paint Fabric Materials.
No. Some but not all acrylic paints are suitable for fabrics. You need to use fabric paint that can withstand multiple wash and dry cycles without discoloring or detaching.
You can't. You need fabric paint for fabric.
A textile designer who paints fabric and then quilts it.
Permanent paints are not soluble in water, which means they won't wash out. Many permanent paints are sensitive to heat, and will "set" into the fibers of the fabric with an iron, or a hot wash. Some paints which are designed to be permanent are acrylic, and will actually crack and break off the fabric instead of adhering permanently.
Cheap quilt fabric is readily available online. One can go to eQuilter, Fabric, Quilt Fabric Closeouts and Fabric Depot to look for cheap quilt fabric.
They are practically the same. I paint with fabric paints most times actually
You can buy a book about fabric design on amazon.com which is cheap and including more informations. http://www.amazon.com/Fabric-Design-Book-Understanding-Creating/dp/1579901204
Cheap interior wall paints can be found at your local hardware store or paint store. Many times they will have spoil or extra paint that they will like get rid of.
Fabric paint can be applied with brushes. Most of the fabric paints commercially available are opaque, which means they will work over any fabric including denim. You may have to apply several coats in order to get the look you are after.
The paper-bag is a great fabric for scrapbooking for children, cheap and very effective.
NOT a good idea to even consider using cheap fabric in your quilt or sewing project. Why go to all the trouble to make something of quality, only to have it fall apart because of a poor grade of fabric. Use the cheap fabric to work out a test sample of a specific pattern.