Samo writes:

This is the material support of the Crash Course on YafaRay I did three weeks ago in Murcia, Spain.

• PDF slides, English version.
• Diapositivas en PDF, versión en Español.
• PDF slides, French version. (thanks to Photonox)
• PDF slides, Chinese version. (thans to Lee a.k.a. TK)
• PDF slides, Italian version. (thanks to MarcoA)
• Practice files / Ficheros de prácticas.

I have included some practical comments about different questions you won't be able to find in the official User's Guide, so please take a look at it. It can be used too as a quick introduction to YafaRay and general raytracing techniques, for teachers preparing lessons about raytracing and lecturers in local users groups.

Perspective machine by Albrecht Dürer, The Painter's Manual, 1525.