I'm just starting Myst. Where could I find a transcription of what the voice says at the beginning of the game? (and any other speaking I might hear) I have trouble hearing and it may be important. Thanks.

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For the beginning Myst speech, see The D'ni Desk Reference, Myst Voice-over.

See also:
The D'ni Desk Reference, Myst Speech Transcript Index.

DPWR.net, Speech Transcripts (Myst, Riven, Exile, Revelation, End of Ages, Uru, and Complete Chronicles)
-- Myst, Atrus, Intro
-- Myst, Atrus, Forechamber Message
-- Myst, Achenar, Blue Book
-- Myst, Atrus, Green Book
-- Myst, Atrus, In D'ni
-- Myst, Sirrus, Channelwood Imager
-- Myst, Sirrus, Red Book