 
240z Upgrades
The 240z is a great car but anything can be improved.
Amazing Upgrades These are some incredibly easy and cheap upgrades to make your car better than stock
Tips & Tricks These are some great ways to make your life easier when restoring or modifying your car
Not So Easy Here are a few really great things but they're not very easy to do
Find & Fix Electrical Problems Few people like working on the electrical system, but it's easier than you think
 Before doing anything, get the genuine Datsun Factory Service Manual. Click here  for a free pdf version.
Aftermarket books, like from Chilton or Haynes are ok, but the factory manual has better pictures and diagrams and is specific for your car's year. 
You can buy an original printed copy on eBay but they tend to be beat-up and expensive. Take your PDF to someplace like Kinko's. Print the entire thing double-sided, then get it spiral-bound. With a spiral bind it'll lay down flat instead of having to be propped up like a regular book. It's well worth a couple extra dollars.
Before doing anything, get the genuine Datsun Factory Service Manual. Click here  for a free pdf version.
Aftermarket books, like from Chilton or Haynes are ok, but the factory manual has better pictures and diagrams and is specific for your car's year. 
You can buy an original printed copy on eBay but they tend to be beat-up and expensive. Take your PDF to someplace like Kinko's. Print the entire thing double-sided, then get it spiral-bound. With a spiral bind it'll lay down flat instead of having to be propped up like a regular book. It's well worth a couple extra dollars.