This is a plastering forum where some pro plasterers are willing to answer questions from beginners
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Its run by a plasterer and he sells a few 'how to' DVD's for £15 to £20. I haven't seen them so can't comment on the quality but from the titles and descriptions they look useful (I have no connection to them, BTW).
It's worth a look. The board structure is...
General Plastering
Beginners readme's
Floor screeding
Plastering Float Coat Bonding, Hardwall, Sound Coat, Browning, etc Skimming Multi Finish, Board Finish, etc One Coat Rendering Internal and External.
Boarding Ceilings, Dot & Dab, Studding, etc
Agents PVA, Bond-It, WBA, SBR, etc Specialist stuff
Dry lining + Dot & Dab
Coving
Tutorial DVD's
-- Phil