I've found it is a good idea with beginners to show them how get the pictures from the camera to the computer quite early in a course. If they are not that computer savvy (and many are not), it can be a bit of a shock and steep learning curve,

but those are the people who may have memory cards with hundreds of vulnerable pictures on.
From your timetable, I'd re-order the classes this way:-
Lesson 1 – settings and basics
Lesson 2 – moving the pictures to the computer, email & flickr (help people share world wide with family etc)
Lesson 3 – tweaking, basic editing, b&w, levels, printing et
Lesson 4 – lighting, composition & rock houses [local nature spot] (good for small landscapes and lots of macros with limited lighting available)
Lesson 5 – local nature park - landscapes and hidden macro shots [on location again]
Like I said, beginners come either with cameras with hardly any pictures taken, or with a memory card with hundreds on, which they they haven't yet transferred to a computer.

And even when they can transfer pics, they choose to leave loads of pics on their memory cards to show people.
They generally are only using the Auto setting too. So maybe mixing the first two classes may be a good idea.
If you are using the Library, make sure you are able to use the computers fully. Some Libraries have security set so tight (in some Liverpool Libraries at least) that you can't connect a USB pendrive as it will wipe all your info. You wouldn't want that to happen to images on a connected camera.
