Metaphoric meaning of Hitchhiker’s?
I suspect that this is simply a reference to The Hitchhiker's Guide to the Galaxy, a cult classic book which the target audience of this text is likely to understand.
The Hitchhiker's Guide page informs us that there was a 1971 travel guide called Hitch-hiker's Guide to Europe and that other works since then which are some kind of "Hitchhiker's Guide" are likely inspired either by Douglas Adams' work, or by the original travel guide.