I misunderstood the reasons behind your post - I thought you were confusing Scots and Scots Gaelic, so many apologies (I know many people who have made that mistake!). The courses you outlined are most definitely for Gaelic courses - what I am trying to find, and hence the thread, is the online equivalent for Scots courses!
David's given some good pointers, but it amazes me that whilst there is a plethora of Gaelic courses, Scots can barely be found, other than in collections of Robert Burns poetry! Whilst Gaelic is actively being promoted in Scotland, and indeed revived, my impression is that Scots is being driven into tartan land, a twee oddity about Scotland. But it was a fully functioning language, and I would like to get to grips with it, so that rather than just rhyming off a wee bit about 'wee sleekit mousies' and the like, I can actually understand how to grammatically construct it into sentences and get a proper feel for how it was used. Although some people do speak in Scots today, it is usually through effort, as English has been so dominant through television, so I want to go back to basics and start with it from scratch!
Apologies again, and thanks for the Gaelic links!
Le gach deagh dhurachd,
Chris