If you need information on how to repair your car I would recommend looking for a 1968 to 1970 Chilton's Auto Repair manual or the Motor's Repair manual as they are oriented towards the shade tree mechanic versus the trained tech at the service department at your local dealership. They were served with the factory service manuals that do not go into as much detail in to how to remove and replace a part to fix a car.
Here is an exampled of what you would see in a Motor's Repair manual.
Here is a Chilton's manual that covers as far back as 1968 (your car is escentually the same mechanically)
The advantage of the newer manual is it includes things such as how rebuild a TH350 transmission that was introduced in 1969 and it covers both the old style 1967-'68 Corvette style four piston disc brakes as well as the newer 1969-'70 and 1971 to 1975 single piston caliper disc brakes that wouldn't appear in an older book.