If you check out the campaign for wool website they might have some links for your area - I remember reading somewhere that there is a small mill I think in your area which takes small amounts of fleece and turns into wool ready for kntting, as a small business they might be ablet to teach you? worth a try
Not really as they will be using machinery which does all the fibre preparation and manipulation automatically, whereas a hand spinner does all those things with her hands - different method.
The Ashford book shows fleece preparation but the original video (there may be a newer version) just shows how to spin straight from a freshly shorn fleece, no prep. I am not familiar with a Portland fleece but it is possible you can spin it straight without preparation
For a good book, funnily enough I was asked to write it
. I got as far as laying out the chapters and their contents before I discovered it was going to cost me more to write than I would be paid (which was peanuts) So it's still in it's foetal stage and likely to stay there
My first chapter went back to how to grow a good fleece on your own sheep which I don't think other books do, then how to prep and store fleece, wash it, card it and spin. Sorry I didn't write it
But the Ashford book should help initially.
Have you tried Utube?