Nat Alcock's "Crucks in England and Wales" or "Catalogue of Cruck Buildings" are good sources; again mostly a survey but it shows a myriad of cruck types with excellent drawings. Might take some hunting to find it. For layout technique, there's been a article or two in the UK Fellowship's "Mortice and Tenon" magazine, one good one by Henry Russell in Issue #6. I think you can buy back issues from the UKCF website, or a compendium of all the back issues.
If you know how to scribe then there's no special tricks to layout once you've matched the curve of the cruck to the apex type and the spurs and tie beams that support the plates and purlins. These arrangements are shown in Alcock and Russell.
Yes we are having another cruck course April 30-May 4 with Jack Sobon and Neil Godden. Details here Cruck Framing.