Buy Plays and Books on acting techniques

Samuel French's is one of the best places for finding plays and books on acting techniques, speech training, theatre and criticism.

Have a look at their website:
http://www.samuel-french-london.co.uk
Or, if in London, visit their shop at:

52 Fitzroy Street,
London
W1T 5JR.

It's very close to Warren Street and Portland Place tube stations.