Reddit reviews Home Maintenance For Dummies

Here are a couple for your consideration:

https://www.amazon.com/Ultimate-Guide-Repair-Improvement-Updated/dp/158011783X

https://www.amazon.com/Complete-Yourself-Manual-Newly-Updated/dp/1621452018

https://www.amazon.com/Home-Maintenance-Dummies-James-Carey/dp/047043063X

http://publications.gc.ca/site/archivee-archived.html?url=http://publications.gc.ca/collections/collection_2017/schl-cmhc/NH15-386-2003-eng.pdf

There are a ton of books on those topics but you'd probably need to buy them separately for home and auto. You can also search the For Dummies publications to see if they have a home/car maintenance once.

Edit: They do.

If you've never done anything before, you need to start with the basics:

https://www.amazon.com/Do-Yourself-Housebuilding-Complete-Handbook/dp/0806904240

https://www.amazon.com/Complete-Do-Yourself-Manual-Completely/dp/0762105798

https://www.amazon.com/Ultimate-Guide-Repair-Improvement-Updated/dp/158011783X

https://www.amazon.com/Home-Maintenance-Dummies-James-Carey/dp/047043063X

https://www.amazon.com/Black-Decker-Book-Home-How/dp/0760354766

There are more, but that selection covers virtually everything you'd run into.

First - politely inform them that you feel communications should cease as you are not a licensed contractor.

2nd - home chepot and Lowes and menards (if in US) have classes for this.

3rd - I have given this to a couple r/kevin ‘s in my life (people completely unable to adult or even aware that they needed to) and was amazed at how much it helped -
The First-Time Homeowner's Survival Guide: A Crash Course in Dealing with Repairs, Renovations, Property Tax Issues, and Other Potential Disasters https://www.amazon.com/dp/0814473725/ref=cm_sw_r_cp_api_i_ugenDb8HMP6CA

This one may seem rude if they don’t get the pun or are sensitive type.
Home Maintenance For Dummies https://www.amazon.com/dp/047043063X/ref=cm_sw_r_cp_api_i_YeenDbPEBKNXW

This one is a great guide and I actually use it regularly for training in hotel maintenance and housekeeping classes.
The Martha Manual: How to Do (Almost) Everything https://www.amazon.com/dp/1328927326/ref=cm_sw_r_cp_api_i_wfenDb3KGNC5J

Home Maintenance For Dummies https://www.amazon.com/dp/047043063X/ref=cm_sw_r_awd_LcfGub1W6ZA4A

Complete Do-It-Yourself Manual: Completely Revised and Updated https://www.amazon.com/dp/0762105798/ref=cm_sw_r_awd_3efGub0KSG133

buy a book http://www.amazon.com/Home-Maintenance-Dummies-James-Carey/dp/047043063X

Well to take your request fairly literal: https://www.amazon.com/Home-Maintenance-Dummies-James-Carey/dp/047043063X/ref=sr_1_sc_1?ie=UTF8&qid=1517604351&sr=8-1-spell&keywords=homewonwers+for+dummies