The most commonly used material for oil paintings is linseed oil. Linseed oil is a drying oil that is extracted from the seeds of the flax plant. It is a clear, yellow-brown liquid that becomes solid when exposed to air. Linseed oil is used to bind the pigment particles together in oil paint. It also helps to give oil paint its characteristic long drying time and glossy finish.
Canvas. Artists have been using canvas for more than 300 years, so it comes highly recommended
Canvas is often made from linen or cotton.
REFINED LINSEED OIL is the most popular form of oil medium. It slows down the drying time of the paint, and when painting in layers, this can be very useful. Apply the 'slow over fast rule' – paint your fast-drying layers first, and then each layer on top should take longer to dry than the previous one.
The best paper for longevity is all-cotton or cotton & linen rag paper, which is essentially the same material used to make artist canvas