The British Lichen Society are running a free course comprises a series of approx. 12 face-to-face zoom-based sessions with a group of 6 participants led by a tutor. Each session of 1.5 hours is structured, interactive with some post session activities.
Typically, several such groups run each year. Most start in October/November with some starting early in the following year.
The target audience is the absolute beginner at lichens, although this may also suit those with some limited experience.
More see their website at https://britishlichensociety.org.uk