Thor, vol. 1 collects Thor #1-8 and Peter Parker: Spider-Man #2, all originally published between 1998 and 1999. Continuity-wise, this book follows immediately after Heroes Reborn: Avengers and Heroes Reborn: The Return. Production quality is good: thin medium-gloss paper and a solid, flexible spine. There are no extras save some variant covers.
Dan Jurgens' new Thor series was intended to be a re-boot of the Thor character, whose previous books had suffered dwindling sales throughout the 1990s. Unfortunately, there's little fresh in Jurgen's stories for this volume, which hitch Thor back up with a human avatar (who happens to be, like the last one, a medical practitioner) and re-introduce old love-interest Jane Foster. The over-arching plot--a slow, cosmic storyline involving an unknown menace--is seemingly modeled off of Walter Simonson's Asgardian epic from the 1980s. Unlike Simonson's run, however, Jurgens' stories offer very little human drama (or, for that matter, Norse mythology); instead, readers are treated to repeated battle sequences and somewhat irrelevant super hero team-ups. Fortunately, John Romita Jr.'s striking layouts provide the stories with some extra pizzazz. Fans of Simonson's run, however, may find Romita Jr.'s pencils a little too dark.
If you're a Thor fan, this is probably worth picking up, as it is essential history for the character. If you're just getting into Thor, however, a much better purchase would be either the extraordinary Thor by Walter Simonson Omnibus or J. Michael Straczynski's more recent series (collected in Thor Omnibus).