The OASA Passport, has been a popular program of courses we devised over years of amateur Astronomy. Perhaps unique about these is quite often they are recorded live while observations are actually be captured. We have covered a variety of topics, imaging with a webcam, a DSLR, how to make a mosaic of the Moon. Soon to add star trails.
Astronomy can be a very challenging unforgiving hobby, not to mention expensive. Soon to be adding a bit on star trails, but here is a link to the course. It has been neglected of late with the GCSE but plans to add more material to this in the year. We’ve even got a section on spectroscopy in there! https://www.onlineastronomycourses.co.uk/courses-2/courses/