Look below

https://www.youtube.com/watch?v=0OloYD_kSbU

https://www.youtube.com/watch?v=qfITRYcnP84

https://www.youtube.com/watch?v=tVdw60eCnJI

https://www.youtube.com/watch?v=ubEadhXWwV4

https://www.youtube.com/watch?v=_QM-DfhrNv8

https://www.youtube.com/watch?v=4eNX_xFt-sU

https://www.youtube.com/watch?v=0WxPx3_ZSBI

https://www.youtube.com/watch?v=jm8Sva2hnvY

https://www.youtube.com/watch?v=1iTC9cBk6Ac

https://www.youtube.com/watch?v=eOksHhQ8TLM

https://www.youtube.com/watch?v=nrRJkzXl4a4

Follow links below:

https://www.khanacademy.org/humanities/art-history-basics/artists-materials-techniques

https://www.khanacademy.org/humanities/art-history-basics/art-1010-ddp