What I've done to fill that void is to go to the manufacturer's web page for the bike, print it out, and save it.
Note this is only good for a year or two. After that you buy new tires (which may or may not be the same brand, model, or size), and put on a new chain (ditto) and re-cable. A couple years later you may need to re-tape (drop bars), and perhaps change out the cassette. A few years later you may need to replace the brifters, and the original model is not longer available -- it's either change model names, or the same model name now has more gears. Etc., etc. On my 20 year old bike the fork and the brakes are original -- everything else has been replaced.
Again, either get yourself a bike repair book or familiarize yourself with the
Park Tool repair site. I know this isn't what you're asking for, but it's what you need to know.
FWIW, does your car manual tell you how to change your struts or brake pads? I don't think the latest ones even tell you how to change your oil!