The Hitchhiker’s Guide to the Galaxy - Douglas Adams - 1979

Don't panic, and bring a towel.

For seasoned galactic travelers, if you're looking for the Ultimate Hitchhiker's Guide to the Galaxy, which includes:

• Hitchhiker's Guide
• The Restaurant at the End of the Universe
• Life, the Universe, and Everything
• So Long and Thanks for All the Fish
• Young Zaphod Plays It Safe
• Mostly Harmless

... this wormhole should get you there.

Also, upon conferring with both Space and Ice Pirates, I've been persuaded to also provide their contribution here in honor of the late, great Douglas Adams.

Now could you guys please untie my cats and get them off the plank?