The problem with other tutorials is that they were not written by me. These were.
Steven L. Jacques, Scott A. Prahl
This was 3-quarter series of 4-credit graduate courses that provided a foundation in physics and mathematics for engineers to design optical instrumentation for biomedical applications. It was taught nearly twenty years ago. Here are a few of the on-line resources.
Making your own optical phantoms.
A little milk scattering demo put together by Martin Ostermeyer and Steve Jacques.