I've tracked down the 3 hard back editions, owned book 2 and 3 in paper back, and bought the Myst Reader. Safe to say I love these books.
The order of the books in the series is book 2, book 1, game 1 game 2 book 3 game 3, 4, uru, 5.
These books are so in-depth and give a real feel of the people of D'ni and its history. it also makes some sense as to how the family ended up on Myst.
Rand and Robyn Miller are truly amazing and i think these books need some recognition.
Please buy it, and vote that it gets ebooked for kindle as I'd really like to buy it on there.