The man who popularized the phrase "assembly is reverse of disassembly" has passed away. 

I was looking for a service manual 26 years ago after I purchased my Z. I had no idea factory manuals might be available. First I found the Chiltons manual, but it covered the S30, S130, and Z31 in the same book, so it wasn't that useful. Then I found the Haynes manual, and in comparison to the Chiltons, I felt I struck gold. I still remember using the Haynes manual to figure out how to replace the vent hoses in my 240Z since it had photos that the FSM lacked. 

https://haynes.com/en-gb/john-harold-haynes-obe-obituary

And if you ever need to service your carrier fighter, who else could you turn to? https://haynes.com/en-gb/grumman-f-14-tomcat-manual

I'm glad Mr. Haynes believed there was a need for his services. He was correct.

I've had my Haynes 240Z manual since the early 1980's, I think.  Dog-eared, grease-smeared, binding disintegrated, but still a great resource.  I think I got my money's worth.