I’m looking for a book that covers the diverse sort of stuff a person should know when they’re starting to make their own way in the world. Stuff I would imagine would be in there is stuff like finance & budgeting, basic auto maintenance, general career advice, etc.
Does a book like this exist?
I find this to be the best I’ve read to date.
bump
Well, I was gonna reply, but Quickie already gave mine.
To answer this specific question: Yes, it does.
Unfortunately, I’ve been blanking on the title and author. I saw it in the same category as self-help books for ADHD. It essentially consisted of a bunch of checklists for “life” stuff. If I ever remember any more details, I’ll post 'em; in the interim, you might want to do some poking around on ADHD or other self-help sites.
Answering my own question for the benefit of other people interested in the subject.
A Car, Some Cash and a Place to Crash: The Only Post-College Survival Guide You’ll Ever Need
Graduate: Everything You Need to Succeed After College
Life Skills 101: A Practical Guide to Leaving Home and Living on Your Own
On Your Own for the First Time
Real Life 101: A Guide to the Stuff That Actually Matters
Life 101: Everything We Wish We Had Learned about Life in School — But Didn’t
Probably all good gifts for grads.
There’s also something I’ve heard with a guy reading a speech (not written by Kurt Vonnegut) over a techno-pop background track about wearing sunscreen.
When I graduated from High School, I was given Where’s Mom Now That I Need Her? It’s pretty good, mostly about cooking, but with a lot of First Aid, Laundry Tips, things like that.
Searching in Amazon for it brought up this page , including a Where’s Dad? version, which I would assume deals more with fixing stuff, drinking beer and watching sports. 
Maybe not Life 101 stuff, but I found the Mom book very useul in the early days.