I'm no longer a teacher; I retired due to ill health in 2012, and I make my living developing online learning materials and delivering training. I'm providing this course free of charge as much of the content is openly available elsewhere.
However it costs me both time and therefore money to develop. I would appreciate it if you could donate what you consider it to be worth.
If you want to use these materials with your own students then I am happy for you to do so but please bear in mind the amount of time and effort that this will save you and contribute accordingly.
The whole course is available as a Moodle backup of the course to allow you to download and include within your own Moodle site.
Please email email@example.com