For a code reader, CA spec cars had a button under the hood in the right hand diagnostic port. All other cars just need a light bulb and a few jumpers. Do a search for code reader or test light and something should pop up on this site.

Give the intake a puff of starting fluid or dribble of fuel, if the motor tries to run, check power to the fuel pump.

Pull a plug wire and check for spark, if you don't have any, check the crankshaft position sensor for AC power while cranking. I'm not 100% sure on these cars but I think you will get at least 2.5V.