A group of us have been transcribing wills for our history society for four years. The books which help us are: 'Examples of Handwriting' - W.S.B.Buck [ I mentioned this earlier] 'The Local Historian's Glossary and Vade Mecum' - Joy Bristow and 'Words from Wills & other probate records' - Stuart A Raymond, 'A Secretary Hand ABC Book' by Alf Ison, a great little book. All are excellent. We have covered from 1540 to around 1750 so far.
Hoping this helps anyone starting out on this project, which I would recommend to all history societies be they family or local.