If you need more in depth info, go to
www.akmcables.com, buy the appropriate cable, and then you can get Freescan, or any of the other available software out there. There are links on the akm site. Of course, you'll need a laptop. Also, I would highly recommend a Factory Service Manual. I got one on ebay for less than $20 shipped. It contains a wealth of knowledge, including flowcharts for what to do after you find out what codes you have. With these and a little automotive knowledge, you should be in good shape.